/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=SHALLOWEST --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:06:02,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:06:02,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:06:02,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:06:02,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:06:02,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:06:02,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:06:02,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:06:02,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:06:02,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:06:02,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:06:02,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:06:02,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:06:02,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:06:02,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:06:02,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:06:02,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:06:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:06:02,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:06:02,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:06:02,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:06:02,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:06:02,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:06:02,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:06:02,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:06:02,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:06:02,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:06:02,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:06:02,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:06:02,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:06:02,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:06:02,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:06:02,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:06:02,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:06:02,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:06:02,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:06:02,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:06:02,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:06:02,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:06:02,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:06:02,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:06:02,785 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 [2020-10-26 21:06:02,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:06:02,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:06:02,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:06:02,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:06:02,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:06:02,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:06:02,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:06:02,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:06:02,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:06:02,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:06:02,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:06:02,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:06:02,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:06:02,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:06:02,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:06:02,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:06:02,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:06:02,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:06:02,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:06:02,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:06:02,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:06:02,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:06:02,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:06:02,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:06:02,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:06:02,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:06:02,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:06:02,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:06:02,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:06:02,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:06:03,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:06:03,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:06:03,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:06:03,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:06:03,292 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:06:03,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-26 21:06:03,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac0fffa1/bf8a84ef97b349c48e770a8ae1ea876a/FLAGb063d7b96 [2020-10-26 21:06:04,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:06:04,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label44.c [2020-10-26 21:06:04,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac0fffa1/bf8a84ef97b349c48e770a8ae1ea876a/FLAGb063d7b96 [2020-10-26 21:06:04,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eac0fffa1/bf8a84ef97b349c48e770a8ae1ea876a [2020-10-26 21:06:04,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:06:04,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:06:04,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:04,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:06:04,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:06:04,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:04" (1/1) ... [2020-10-26 21:06:04,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8d31ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:04, skipping insertion in model container [2020-10-26 21:06:04,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:04" (1/1) ... [2020-10-26 21:06:04,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:06:05,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:06:06,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:06,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:06:07,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:07,096 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:06:07,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07 WrapperNode [2020-10-26 21:06:07,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:07,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:06:07,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:06:07,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:06:07,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (1/1) ... [2020-10-26 21:06:07,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:06:07,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:06:07,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:06:07,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:06:07,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (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 [2020-10-26 21:06:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:06:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:06:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:06:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:06:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:06:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:06:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:06:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:06:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:06:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:06:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:06:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:06:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:06:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:06:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:06:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:06:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:06:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:06:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:06:12,411 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:06:12,411 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:06:12,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:12 BoogieIcfgContainer [2020-10-26 21:06:12,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:06:12,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:06:12,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:06:12,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:06:12,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:06:04" (1/3) ... [2020-10-26 21:06:12,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1660a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:12, skipping insertion in model container [2020-10-26 21:06:12,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:07" (2/3) ... [2020-10-26 21:06:12,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1660a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:12, skipping insertion in model container [2020-10-26 21:06:12,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:12" (3/3) ... [2020-10-26 21:06:12,423 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label44.c [2020-10-26 21:06:12,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:06:12,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:06:12,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:06:12,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:06:12,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:06:12,485 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:06:12,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:06:12,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:06:12,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:06:12,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:06:12,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:06:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:06:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-26 21:06:12,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:12,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:12,588 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:12,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash -882410056, now seen corresponding path program 1 times [2020-10-26 21:06:12,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:12,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391927480] [2020-10-26 21:06:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-26 21:06:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 21:06:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:06:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 802 [2020-10-26 21:06:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:06:19,251 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:19,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:19,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:06:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:19,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:06:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:20,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391927480] [2020-10-26 21:06:20,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:20,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:06:20,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103084200] [2020-10-26 21:06:20,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:06:20,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:20,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:06:20,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:06:20,462 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:06:20,636 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:31,373 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-26 21:06:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:06:31,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 795 [2020-10-26 21:06:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:31,437 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:06:31,437 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:06:31,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:06:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:06:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-26 21:06:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-26 21:06:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2974 transitions. [2020-10-26 21:06:31,630 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2974 transitions. Word has length 795 [2020-10-26 21:06:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:31,633 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2974 transitions. [2020-10-26 21:06:31,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:06:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2974 transitions. [2020-10-26 21:06:31,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-26 21:06:31,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:31,666 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:31,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:06:31,667 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:31,669 INFO L82 PathProgramCache]: Analyzing trace with hash -670062093, now seen corresponding path program 1 times [2020-10-26 21:06:31,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:31,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717076188] [2020-10-26 21:06:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:36,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-26 21:06:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-26 21:06:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:06:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:06:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:37,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:37,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:37,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:37,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:06:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:06:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:06:37,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:06:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:37,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717076188] [2020-10-26 21:06:37,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:37,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:06:37,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52594652] [2020-10-26 21:06:37,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:06:37,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:37,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:06:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:06:37,616 INFO L87 Difference]: Start difference. First operand 1688 states and 2974 transitions. Second operand 7 states. [2020-10-26 21:06:37,746 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:06:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:49,730 INFO L93 Difference]: Finished difference Result 5213 states and 9314 transitions. [2020-10-26 21:06:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:06:49,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2020-10-26 21:06:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:49,755 INFO L225 Difference]: With dead ends: 5213 [2020-10-26 21:06:49,755 INFO L226 Difference]: Without dead ends: 3531 [2020-10-26 21:06:49,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:06:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-26 21:06:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3424. [2020-10-26 21:06:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3424 states. [2020-10-26 21:06:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 5325 transitions. [2020-10-26 21:06:49,911 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 5325 transitions. Word has length 804 [2020-10-26 21:06:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:49,911 INFO L481 AbstractCegarLoop]: Abstraction has 3424 states and 5325 transitions. [2020-10-26 21:06:49,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:06:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 5325 transitions. [2020-10-26 21:06:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-26 21:06:49,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:49,928 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:49,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:06:49,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 56048238, now seen corresponding path program 1 times [2020-10-26 21:06:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:49,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969782106] [2020-10-26 21:06:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:54,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:54,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-26 21:06:54,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-26 21:06:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:55,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:55,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:06:55,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:55,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:55,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:55,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 21:06:55,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:06:55,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:55,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 21:06:55,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:55,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969782106] [2020-10-26 21:06:55,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:55,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:06:55,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982918323] [2020-10-26 21:06:55,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:06:55,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:55,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:06:55,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:06:55,763 INFO L87 Difference]: Start difference. First operand 3424 states and 5325 transitions. Second operand 8 states. [2020-10-26 21:07:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:08,707 INFO L93 Difference]: Finished difference Result 10428 states and 16498 transitions. [2020-10-26 21:07:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:07:08,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 815 [2020-10-26 21:07:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:08,745 INFO L225 Difference]: With dead ends: 10428 [2020-10-26 21:07:08,745 INFO L226 Difference]: Without dead ends: 7010 [2020-10-26 21:07:08,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2020-10-26 21:07:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 6979. [2020-10-26 21:07:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6979 states. [2020-10-26 21:07:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10283 transitions. [2020-10-26 21:07:09,005 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10283 transitions. Word has length 815 [2020-10-26 21:07:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:09,006 INFO L481 AbstractCegarLoop]: Abstraction has 6979 states and 10283 transitions. [2020-10-26 21:07:09,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:07:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10283 transitions. [2020-10-26 21:07:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-26 21:07:09,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:09,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:09,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:07:09,046 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1616232624, now seen corresponding path program 1 times [2020-10-26 21:07:09,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:09,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797179667] [2020-10-26 21:07:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-26 21:07:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-26 21:07:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:07:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:14,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:14,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:14,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:14,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:07:14,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:07:14,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:07:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 21:07:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:14,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:14,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:07:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:07:14,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 21:07:14,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:07:15,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797179667] [2020-10-26 21:07:15,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:15,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:15,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269259404] [2020-10-26 21:07:15,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:15,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:15,106 INFO L87 Difference]: Start difference. First operand 6979 states and 10283 transitions. Second operand 7 states. [2020-10-26 21:07:15,248 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:18,105 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:07:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:28,110 INFO L93 Difference]: Finished difference Result 20941 states and 31538 transitions. [2020-10-26 21:07:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:07:28,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 817 [2020-10-26 21:07:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:28,188 INFO L225 Difference]: With dead ends: 20941 [2020-10-26 21:07:28,189 INFO L226 Difference]: Without dead ends: 13968 [2020-10-26 21:07:28,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13968 states. [2020-10-26 21:07:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13968 to 13949. [2020-10-26 21:07:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13949 states. [2020-10-26 21:07:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13949 states to 13949 states and 19026 transitions. [2020-10-26 21:07:28,617 INFO L78 Accepts]: Start accepts. Automaton has 13949 states and 19026 transitions. Word has length 817 [2020-10-26 21:07:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:28,618 INFO L481 AbstractCegarLoop]: Abstraction has 13949 states and 19026 transitions. [2020-10-26 21:07:28,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13949 states and 19026 transitions. [2020-10-26 21:07:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-26 21:07:28,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:28,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:28,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:07:28,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash 926753114, now seen corresponding path program 1 times [2020-10-26 21:07:28,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:28,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52764030] [2020-10-26 21:07:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:33,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-26 21:07:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 21:07:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:07:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 830 [2020-10-26 21:07:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:34,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:34,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:34,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:07:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:07:36,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52764030] [2020-10-26 21:07:36,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:36,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:07:36,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91129268] [2020-10-26 21:07:36,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:36,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:36,185 INFO L87 Difference]: Start difference. First operand 13949 states and 19026 transitions. Second operand 7 states. [2020-10-26 21:07:36,325 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:36,543 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:07:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:51,721 INFO L93 Difference]: Finished difference Result 40600 states and 55146 transitions. [2020-10-26 21:07:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:07:51,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 821 [2020-10-26 21:07:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:51,818 INFO L225 Difference]: With dead ends: 40600 [2020-10-26 21:07:51,818 INFO L226 Difference]: Without dead ends: 26657 [2020-10-26 21:07:51,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26657 states. [2020-10-26 21:07:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26657 to 23282. [2020-10-26 21:07:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23282 states. [2020-10-26 21:07:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23282 states to 23282 states and 31256 transitions. [2020-10-26 21:07:52,431 INFO L78 Accepts]: Start accepts. Automaton has 23282 states and 31256 transitions. Word has length 821 [2020-10-26 21:07:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:52,433 INFO L481 AbstractCegarLoop]: Abstraction has 23282 states and 31256 transitions. [2020-10-26 21:07:52,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 23282 states and 31256 transitions. [2020-10-26 21:07:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-26 21:07:52,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:52,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-26 21:07:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:07:52,493 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -21667540, now seen corresponding path program 1 times [2020-10-26 21:07:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:52,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099191499] [2020-10-26 21:07:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:57,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:07:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:57,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:07:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:57,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:57,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:07:57,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:07:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:58,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:58,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:07:58,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:07:58,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:07:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 21:07:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:58,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:58,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:07:58,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 21:07:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:07:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 114 proven. 36 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-26 21:07:58,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099191499] [2020-10-26 21:07:58,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:58,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:58,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091900193] [2020-10-26 21:07:58,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:58,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:58,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:58,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:58,657 INFO L87 Difference]: Start difference. First operand 23282 states and 31256 transitions. Second operand 7 states. [2020-10-26 21:07:58,793 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:08:06,033 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:08:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:14,414 INFO L93 Difference]: Finished difference Result 56297 states and 77290 transitions. [2020-10-26 21:08:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:08:14,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-26 21:08:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:14,528 INFO L225 Difference]: With dead ends: 56297 [2020-10-26 21:08:14,528 INFO L226 Difference]: Without dead ends: 33021 [2020-10-26 21:08:14,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:08:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33021 states. [2020-10-26 21:08:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33021 to 32917. [2020-10-26 21:08:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32917 states. [2020-10-26 21:08:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32917 states to 32917 states and 44222 transitions. [2020-10-26 21:08:15,543 INFO L78 Accepts]: Start accepts. Automaton has 32917 states and 44222 transitions. Word has length 921 [2020-10-26 21:08:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:15,543 INFO L481 AbstractCegarLoop]: Abstraction has 32917 states and 44222 transitions. [2020-10-26 21:08:15,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:08:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 32917 states and 44222 transitions. [2020-10-26 21:08:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-26 21:08:15,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:15,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 21:08:15,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:08:15,626 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:15,627 INFO L82 PathProgramCache]: Analyzing trace with hash -346832770, now seen corresponding path program 1 times [2020-10-26 21:08:15,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:15,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102813816] [2020-10-26 21:08:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:20,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-26 21:08:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:20,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:20,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:20,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 21:08:21,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 21:08:21,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:08:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 21:08:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:08:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 21:08:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:08:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 117 proven. 66 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 21:08:21,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102813816] [2020-10-26 21:08:21,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:21,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:21,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516693868] [2020-10-26 21:08:21,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:21,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:21,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:21,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:21,589 INFO L87 Difference]: Start difference. First operand 32917 states and 44222 transitions. Second operand 7 states. [2020-10-26 21:08:21,714 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:26,523 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:34,589 INFO L93 Difference]: Finished difference Result 87977 states and 120521 transitions. [2020-10-26 21:08:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:08:34,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-26 21:08:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:34,781 INFO L225 Difference]: With dead ends: 87977 [2020-10-26 21:08:34,782 INFO L226 Difference]: Without dead ends: 55066 [2020-10-26 21:08:34,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:08:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55066 states. [2020-10-26 21:08:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55066 to 54968. [2020-10-26 21:08:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54968 states. [2020-10-26 21:08:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54968 states to 54968 states and 70355 transitions. [2020-10-26 21:08:36,265 INFO L78 Accepts]: Start accepts. Automaton has 54968 states and 70355 transitions. Word has length 921 [2020-10-26 21:08:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:36,265 INFO L481 AbstractCegarLoop]: Abstraction has 54968 states and 70355 transitions. [2020-10-26 21:08:36,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:08:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54968 states and 70355 transitions. [2020-10-26 21:08:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-26 21:08:36,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:36,425 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 21:08:36,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:08:36,425 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1699619783, now seen corresponding path program 1 times [2020-10-26 21:08:36,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:36,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351479797] [2020-10-26 21:08:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1148 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:08:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:41,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:41,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:08:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:08:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:08:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:41,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 21:08:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:08:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 21:08:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 21:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-26 21:08:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:42,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:08:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 340 proven. 125 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-26 21:08:42,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351479797] [2020-10-26 21:08:42,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:42,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:42,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110786981] [2020-10-26 21:08:42,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:42,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:42,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:42,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:42,728 INFO L87 Difference]: Start difference. First operand 54968 states and 70355 transitions. Second operand 7 states. [2020-10-26 21:08:42,977 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:44,972 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:05,361 INFO L93 Difference]: Finished difference Result 155391 states and 209115 transitions. [2020-10-26 21:09:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:09:05,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1122 [2020-10-26 21:09:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:05,737 INFO L225 Difference]: With dead ends: 155391 [2020-10-26 21:09:05,737 INFO L226 Difference]: Without dead ends: 100429 [2020-10-26 21:09:05,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100429 states. [2020-10-26 21:09:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100429 to 100366. [2020-10-26 21:09:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100366 states. [2020-10-26 21:09:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100366 states to 100366 states and 131452 transitions. [2020-10-26 21:09:09,175 INFO L78 Accepts]: Start accepts. Automaton has 100366 states and 131452 transitions. Word has length 1122 [2020-10-26 21:09:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:09,176 INFO L481 AbstractCegarLoop]: Abstraction has 100366 states and 131452 transitions. [2020-10-26 21:09:09,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 100366 states and 131452 transitions. [2020-10-26 21:09:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2020-10-26 21:09:09,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:09,507 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 21:09:09,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:09:09,508 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash -22107617, now seen corresponding path program 1 times [2020-10-26 21:09:09,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:09,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832070189] [2020-10-26 21:09:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:14,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1200 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-26 21:09:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,017 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:09:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:09:15,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:09:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:09:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:09:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 21:09:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 21:09:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-26 21:09:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 21:09:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-26 21:09:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:09:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:09:15,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 21:09:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 565 proven. 54 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 21:09:16,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832070189] [2020-10-26 21:09:16,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:16,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:09:16,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487630527] [2020-10-26 21:09:16,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:09:16,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:09:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:09:16,397 INFO L87 Difference]: Start difference. First operand 100366 states and 131452 transitions. Second operand 8 states. [2020-10-26 21:09:16,531 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:22,311 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:32,052 INFO L93 Difference]: Finished difference Result 216976 states and 288446 transitions. [2020-10-26 21:09:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:09:32,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1174 [2020-10-26 21:09:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:32,589 INFO L225 Difference]: With dead ends: 216976 [2020-10-26 21:09:32,589 INFO L226 Difference]: Without dead ends: 116620 [2020-10-26 21:09:32,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:09:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116620 states. [2020-10-26 21:09:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116620 to 116520. [2020-10-26 21:09:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116520 states.