/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:08:11,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:08:11,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:08:11,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:08:11,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:08:11,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:08:11,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:08:11,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:08:11,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:08:11,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:08:11,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:08:11,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:08:11,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:08:11,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:08:11,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:08:11,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:08:11,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:08:11,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:08:11,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:08:11,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:08:11,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:08:11,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:08:11,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:08:11,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:08:11,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:08:11,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:08:11,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:08:11,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:08:11,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:08:11,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:08:11,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:08:11,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:08:11,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:08:11,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:08:11,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:08:11,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:08:11,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:08:11,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:08:11,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:08:11,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:08:11,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:08:11,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:08:11,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:08:11,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:08:11,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:08:11,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:08:11,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:08:11,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:08:11,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:08:11,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:08:11,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:08:11,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:08:11,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:08:11,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:08:11,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:08:11,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:08:11,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:08:11,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:08:11,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:08:11,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:08:11,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:08:11,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:08:11,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:08:11,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:08:11,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:08:11,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:08:11,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:08:12,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:08:12,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:08:12,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:08:12,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:08:12,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:08:12,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-28 13:08:12,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bfe2e74b/4497bf79ab914ff3a63e8c03eb4dc4fa/FLAG137e40765 [2020-10-28 13:08:13,325 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:08:13,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-28 13:08:13,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bfe2e74b/4497bf79ab914ff3a63e8c03eb4dc4fa/FLAG137e40765 [2020-10-28 13:08:13,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bfe2e74b/4497bf79ab914ff3a63e8c03eb4dc4fa [2020-10-28 13:08:13,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:08:13,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:08:13,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:08:13,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:08:13,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:08:13,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:08:13" (1/1) ... [2020-10-28 13:08:13,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145ae71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:13, skipping insertion in model container [2020-10-28 13:08:13,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:08:13" (1/1) ... [2020-10-28 13:08:13,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:08:13,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:08:14,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:08:14,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:08:14,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:08:14,787 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:08:14,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14 WrapperNode [2020-10-28 13:08:14,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:08:14,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:08:14,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:08:14,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:08:14,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:14,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:14,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:14,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:14,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:14,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:15,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... [2020-10-28 13:08:15,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:08:15,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:08:15,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:08:15,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:08:15,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:08:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:08:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:08:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:08:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:08:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:08:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:08:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:08:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:08:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:08:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:08:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:08:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:08:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:08:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:08:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:08:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:08:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:08:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:08:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:08:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:08:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:08:19,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:08:19,009 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:08:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:08:19 BoogieIcfgContainer [2020-10-28 13:08:19,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:08:19,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:08:19,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:08:19,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:08:19,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:08:13" (1/3) ... [2020-10-28 13:08:19,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691a9d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:08:19, skipping insertion in model container [2020-10-28 13:08:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:08:14" (2/3) ... [2020-10-28 13:08:19,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691a9d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:08:19, skipping insertion in model container [2020-10-28 13:08:19,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:08:19" (3/3) ... [2020-10-28 13:08:19,022 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label38.c [2020-10-28 13:08:19,035 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:08:19,042 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:08:19,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:08:19,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:08:19,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:08:19,099 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:08:19,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:08:19,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:08:19,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:08:19,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:08:19,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:08:19,130 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:08:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 13:08:19,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:19,139 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] [2020-10-28 13:08:19,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1202570943, now seen corresponding path program 1 times [2020-10-28 13:08:19,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:19,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20419919] [2020-10-28 13:08:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-28 13:08:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:19,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:08:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 13:08:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:08:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:20,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:08:20,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:20,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:08:20,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:08:20,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20419919] [2020-10-28 13:08:20,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:08:20,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:08:20,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875041966] [2020-10-28 13:08:20,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:08:20,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:20,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:08:20,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:08:20,307 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-28 13:08:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:34,127 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-28 13:08:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:08:34,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-28 13:08:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:34,156 INFO L225 Difference]: With dead ends: 1522 [2020-10-28 13:08:34,157 INFO L226 Difference]: Without dead ends: 1011 [2020-10-28 13:08:34,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-28 13:08:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-28 13:08:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-28 13:08:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1380 transitions. [2020-10-28 13:08:34,337 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1380 transitions. Word has length 37 [2020-10-28 13:08:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:34,337 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1380 transitions. [2020-10-28 13:08:34,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:08:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1380 transitions. [2020-10-28 13:08:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 13:08:34,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:34,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:34,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:08:34,350 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:34,351 INFO L82 PathProgramCache]: Analyzing trace with hash -26943383, now seen corresponding path program 1 times [2020-10-28 13:08:34,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:34,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722746827] [2020-10-28 13:08:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 13:08:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-28 13:08:36,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:08:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:08:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:08:36,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:08:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:08:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:08:36,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:08:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:08:37,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722746827] [2020-10-28 13:08:37,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:08:37,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:08:37,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007030943] [2020-10-28 13:08:37,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:37,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:37,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:37,019 INFO L87 Difference]: Start difference. First operand 1001 states and 1380 transitions. Second operand 7 states. [2020-10-28 13:08:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:45,761 INFO L93 Difference]: Finished difference Result 2336 states and 3160 transitions. [2020-10-28 13:08:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:08:45,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-28 13:08:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:45,773 INFO L225 Difference]: With dead ends: 2336 [2020-10-28 13:08:45,773 INFO L226 Difference]: Without dead ends: 1341 [2020-10-28 13:08:45,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:08:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-28 13:08:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1324. [2020-10-28 13:08:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-28 13:08:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1735 transitions. [2020-10-28 13:08:45,880 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1735 transitions. Word has length 106 [2020-10-28 13:08:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:45,881 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1735 transitions. [2020-10-28 13:08:45,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1735 transitions. [2020-10-28 13:08:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 13:08:45,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:45,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:45,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:08:45,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:45,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1317769777, now seen corresponding path program 1 times [2020-10-28 13:08:45,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:45,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253612492] [2020-10-28 13:08:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:08:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-28 13:08:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:46,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:08:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:46,921 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:08:46,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:46,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:46,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:08:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:47,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:08:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:08:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:08:47,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253612492] [2020-10-28 13:08:47,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:08:47,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:08:47,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553266629] [2020-10-28 13:08:47,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:47,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:47,428 INFO L87 Difference]: Start difference. First operand 1324 states and 1735 transitions. Second operand 7 states. [2020-10-28 13:08:51,176 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:09:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:00,205 INFO L93 Difference]: Finished difference Result 3009 states and 4142 transitions. [2020-10-28 13:09:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:09:00,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 13:09:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:00,219 INFO L225 Difference]: With dead ends: 3009 [2020-10-28 13:09:00,219 INFO L226 Difference]: Without dead ends: 1998 [2020-10-28 13:09:00,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-10-28 13:09:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1956. [2020-10-28 13:09:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-28 13:09:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2426 transitions. [2020-10-28 13:09:00,293 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2426 transitions. Word has length 111 [2020-10-28 13:09:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:00,293 INFO L481 AbstractCegarLoop]: Abstraction has 1956 states and 2426 transitions. [2020-10-28 13:09:00,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2426 transitions. [2020-10-28 13:09:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 13:09:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:00,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:00,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:09:00,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:00,300 INFO L82 PathProgramCache]: Analyzing trace with hash 592816440, now seen corresponding path program 1 times [2020-10-28 13:09:00,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:00,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279720313] [2020-10-28 13:09:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 13:09:05,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:09:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:09:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:05,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:09:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:09:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:05,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:05,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:05,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:09:05,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:09:05,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:05,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:09:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:09:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:06,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:06,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:09:06,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:09:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-28 13:09:06,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:06,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:06,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:09:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 103 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:09:06,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279720313] [2020-10-28 13:09:06,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:06,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:09:06,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651950811] [2020-10-28 13:09:06,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:09:06,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:09:06,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:06,286 INFO L87 Difference]: Start difference. First operand 1956 states and 2426 transitions. Second operand 6 states. [2020-10-28 13:09:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:16,878 INFO L93 Difference]: Finished difference Result 3971 states and 5180 transitions. [2020-10-28 13:09:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:09:16,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2020-10-28 13:09:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:16,913 INFO L225 Difference]: With dead ends: 3971 [2020-10-28 13:09:16,913 INFO L226 Difference]: Without dead ends: 2639 [2020-10-28 13:09:16,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:09:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-28 13:09:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2613. [2020-10-28 13:09:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:09:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3181 transitions. [2020-10-28 13:09:17,029 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3181 transitions. Word has length 211 [2020-10-28 13:09:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:17,031 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3181 transitions. [2020-10-28 13:09:17,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:09:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3181 transitions. [2020-10-28 13:09:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 13:09:17,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:17,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:17,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:09:17,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:17,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1984654277, now seen corresponding path program 1 times [2020-10-28 13:09:17,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:17,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676219683] [2020-10-28 13:09:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:22,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 13:09:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:09:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:09:22,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:22,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:09:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:09:22,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:22,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:22,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:22,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:22,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:09:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:09:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:22,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:09:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:22,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:09:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:22,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:09:22,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:09:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676219683] [2020-10-28 13:09:22,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:22,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:22,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5704764] [2020-10-28 13:09:22,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:22,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:22,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:23,000 INFO L87 Difference]: Start difference. First operand 2613 states and 3181 transitions. Second operand 7 states. [2020-10-28 13:09:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:33,821 INFO L93 Difference]: Finished difference Result 6231 states and 7884 transitions. [2020-10-28 13:09:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:09:33,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-28 13:09:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:33,850 INFO L225 Difference]: With dead ends: 6231 [2020-10-28 13:09:33,850 INFO L226 Difference]: Without dead ends: 3581 [2020-10-28 13:09:33,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:33,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2020-10-28 13:09:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3540. [2020-10-28 13:09:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-10-28 13:09:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 3996 transitions. [2020-10-28 13:09:33,994 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 3996 transitions. Word has length 255 [2020-10-28 13:09:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:33,995 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 3996 transitions. [2020-10-28 13:09:33,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 3996 transitions. [2020-10-28 13:09:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-28 13:09:34,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:34,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:34,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:09:34,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash -450984955, now seen corresponding path program 1 times [2020-10-28 13:09:34,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:34,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437617689] [2020-10-28 13:09:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 13:09:38,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:38,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4661 [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:09:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:39,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:09:39,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:39,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:09:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:09:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-28 13:09:39,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:39,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:09:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:09:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:09:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:09:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:09:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:09:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 58 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:09:40,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437617689] [2020-10-28 13:09:40,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:40,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5061243] [2020-10-28 13:09:40,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:40,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:40,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:40,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:40,753 INFO L87 Difference]: Start difference. First operand 3540 states and 3996 transitions. Second operand 7 states. [2020-10-28 13:09:40,902 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:09:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:50,141 INFO L93 Difference]: Finished difference Result 6817 states and 7744 transitions. [2020-10-28 13:09:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:09:50,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-28 13:09:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:50,161 INFO L225 Difference]: With dead ends: 6817 [2020-10-28 13:09:50,162 INFO L226 Difference]: Without dead ends: 3590 [2020-10-28 13:09:50,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:09:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-10-28 13:09:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3546. [2020-10-28 13:09:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3546 states. [2020-10-28 13:09:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4003 transitions. [2020-10-28 13:09:50,274 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4003 transitions. Word has length 322 [2020-10-28 13:09:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:50,275 INFO L481 AbstractCegarLoop]: Abstraction has 3546 states and 4003 transitions. [2020-10-28 13:09:50,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4003 transitions. [2020-10-28 13:09:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-28 13:09:50,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:50,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:50,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:09:50,284 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:50,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:50,285 INFO L82 PathProgramCache]: Analyzing trace with hash -427016420, now seen corresponding path program 1 times [2020-10-28 13:09:50,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:50,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93463165] [2020-10-28 13:09:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-10-28 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:52,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:09:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:09:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:52,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:09:52,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:52,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:09:52,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:52,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:09:52,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-28 13:09:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:52,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:09:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:09:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:09:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:09:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:53,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:09:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:09:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:53,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93463165] [2020-10-28 13:09:53,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:53,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:53,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122573402] [2020-10-28 13:09:53,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:53,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:53,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:53,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:53,589 INFO L87 Difference]: Start difference. First operand 3546 states and 4003 transitions. Second operand 7 states. [2020-10-28 13:09:53,749 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:09:55,775 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:10:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:05,782 INFO L93 Difference]: Finished difference Result 8448 states and 9828 transitions. [2020-10-28 13:10:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:05,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-28 13:10:05,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:05,809 INFO L225 Difference]: With dead ends: 8448 [2020-10-28 13:10:05,809 INFO L226 Difference]: Without dead ends: 5215 [2020-10-28 13:10:05,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2020-10-28 13:10:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5143. [2020-10-28 13:10:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5143 states. [2020-10-28 13:10:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 5792 transitions. [2020-10-28 13:10:06,000 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 5792 transitions. Word has length 396 [2020-10-28 13:10:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:06,002 INFO L481 AbstractCegarLoop]: Abstraction has 5143 states and 5792 transitions. [2020-10-28 13:10:06,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 5792 transitions. [2020-10-28 13:10:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-28 13:10:06,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:06,014 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:06,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:10:06,014 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:06,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2122808542, now seen corresponding path program 1 times [2020-10-28 13:10:06,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:06,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348927841] [2020-10-28 13:10:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:09,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-28 13:10:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:10:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2968 [2020-10-28 13:10:09,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:09,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:10:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:10:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:09,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:09,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:09,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:10:09,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:10:09,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:09,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:10:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:10:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 13:10:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:10,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:10:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:10:10,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348927841] [2020-10-28 13:10:10,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:10,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:10,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750171860] [2020-10-28 13:10:10,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:10,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:10,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:10,787 INFO L87 Difference]: Start difference. First operand 5143 states and 5792 transitions. Second operand 7 states. [2020-10-28 13:10:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:20,287 INFO L93 Difference]: Finished difference Result 11300 states and 12711 transitions. [2020-10-28 13:10:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:10:20,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-28 13:10:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:20,321 INFO L225 Difference]: With dead ends: 11300 [2020-10-28 13:10:20,321 INFO L226 Difference]: Without dead ends: 6470 [2020-10-28 13:10:20,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:10:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2020-10-28 13:10:20,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6091. [2020-10-28 13:10:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2020-10-28 13:10:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 6771 transitions. [2020-10-28 13:10:20,567 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 6771 transitions. Word has length 422 [2020-10-28 13:10:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:20,568 INFO L481 AbstractCegarLoop]: Abstraction has 6091 states and 6771 transitions. [2020-10-28 13:10:20,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 6771 transitions. [2020-10-28 13:10:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-28 13:10:20,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:20,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:20,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:10:20,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:20,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1275171814, now seen corresponding path program 1 times [2020-10-28 13:10:20,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:20,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449887290] [2020-10-28 13:10:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:21,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:21,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-28 13:10:21,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:21,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-28 13:10:21,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:21,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:21,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 13:10:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:21,844 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:10:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:21,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:21,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:21,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:10:21,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:21,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:10:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:22,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:22,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:10:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:22,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-28 13:10:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:10:22,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449887290] [2020-10-28 13:10:22,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:22,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:10:22,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245939255] [2020-10-28 13:10:22,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:10:22,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:22,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:10:22,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:10:22,583 INFO L87 Difference]: Start difference. First operand 6091 states and 6771 transitions. Second operand 5 states. [2020-10-28 13:10:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:29,602 INFO L93 Difference]: Finished difference Result 13449 states and 15304 transitions. [2020-10-28 13:10:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:10:29,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2020-10-28 13:10:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:29,651 INFO L225 Difference]: With dead ends: 13449 [2020-10-28 13:10:29,651 INFO L226 Difference]: Without dead ends: 7671 [2020-10-28 13:10:29,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:10:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7671 states. [2020-10-28 13:10:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7671 to 7357. [2020-10-28 13:10:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7357 states. [2020-10-28 13:10:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 8146 transitions. [2020-10-28 13:10:29,875 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 8146 transitions. Word has length 434 [2020-10-28 13:10:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:29,877 INFO L481 AbstractCegarLoop]: Abstraction has 7357 states and 8146 transitions. [2020-10-28 13:10:29,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:10:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 8146 transitions. [2020-10-28 13:10:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-28 13:10:29,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:29,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:29,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:10:29,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 251809399, now seen corresponding path program 1 times [2020-10-28 13:10:29,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:29,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777763406] [2020-10-28 13:10:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354 [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:10:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:34,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:34,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:34,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:10:34,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:34,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:35,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:10:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:10:35,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:35,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:10:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:35,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777763406] [2020-10-28 13:10:35,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:35,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:35,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404861926] [2020-10-28 13:10:35,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:35,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:35,654 INFO L87 Difference]: Start difference. First operand 7357 states and 8146 transitions. Second operand 7 states. [2020-10-28 13:10:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:50,206 INFO L93 Difference]: Finished difference Result 15725 states and 17840 transitions. [2020-10-28 13:10:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:50,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-28 13:10:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:50,241 INFO L225 Difference]: With dead ends: 15725 [2020-10-28 13:10:50,242 INFO L226 Difference]: Without dead ends: 8979 [2020-10-28 13:10:50,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-28 13:10:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8942. [2020-10-28 13:10:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8942 states. [2020-10-28 13:10:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 9918 transitions. [2020-10-28 13:10:50,461 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 9918 transitions. Word has length 535 [2020-10-28 13:10:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:50,463 INFO L481 AbstractCegarLoop]: Abstraction has 8942 states and 9918 transitions. [2020-10-28 13:10:50,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 9918 transitions. [2020-10-28 13:10:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-28 13:10:50,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:50,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:50,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:10:50,475 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 616275493, now seen corresponding path program 1 times [2020-10-28 13:10:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:50,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58634734] [2020-10-28 13:10:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:54,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-28 13:10:54,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4342 [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:10:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:55,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:10:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:55,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:55,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:55,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:10:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:55,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:55,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:10:55,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:10:55,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:55,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:10:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:56,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58634734] [2020-10-28 13:10:56,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:56,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:56,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705276482] [2020-10-28 13:10:56,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:56,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:56,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:56,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:56,142 INFO L87 Difference]: Start difference. First operand 8942 states and 9918 transitions. Second operand 7 states. [2020-10-28 13:11:01,141 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:11:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:07,518 INFO L93 Difference]: Finished difference Result 20362 states and 23059 transitions. [2020-10-28 13:11:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:11:07,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-28 13:11:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:07,579 INFO L225 Difference]: With dead ends: 20362 [2020-10-28 13:11:07,580 INFO L226 Difference]: Without dead ends: 12974 [2020-10-28 13:11:07,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:11:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12974 states. [2020-10-28 13:11:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12974 to 11423. [2020-10-28 13:11:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11423 states. [2020-10-28 13:11:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11423 states to 11423 states and 12889 transitions. [2020-10-28 13:11:07,861 INFO L78 Accepts]: Start accepts. Automaton has 11423 states and 12889 transitions. Word has length 562 [2020-10-28 13:11:07,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:07,862 INFO L481 AbstractCegarLoop]: Abstraction has 11423 states and 12889 transitions. [2020-10-28 13:11:07,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:07,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11423 states and 12889 transitions. [2020-10-28 13:11:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-28 13:11:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:07,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:07,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:11:07,873 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1283651340, now seen corresponding path program 1 times [2020-10-28 13:11:07,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:07,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729417839] [2020-10-28 13:11:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:11:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 13:11:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:13,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:13,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:13,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:11:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:13,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:13,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:11:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:13,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:11:13,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:11:13,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:13,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:13,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:11:13,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 13:11:14,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729417839] [2020-10-28 13:11:14,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:11:14,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:11:14,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708191112] [2020-10-28 13:11:14,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:11:14,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:14,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:11:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:14,148 INFO L87 Difference]: Start difference. First operand 11423 states and 12889 transitions. Second operand 5 states. [2020-10-28 13:11:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:23,888 INFO L93 Difference]: Finished difference Result 25335 states and 29211 transitions. [2020-10-28 13:11:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:23,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 599 [2020-10-28 13:11:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:23,937 INFO L225 Difference]: With dead ends: 25335 [2020-10-28 13:11:23,937 INFO L226 Difference]: Without dead ends: 13912 [2020-10-28 13:11:23,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:11:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13912 states. [2020-10-28 13:11:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13912 to 13296. [2020-10-28 13:11:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13296 states. [2020-10-28 13:11:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13296 states to 13296 states and 14952 transitions. [2020-10-28 13:11:24,337 INFO L78 Accepts]: Start accepts. Automaton has 13296 states and 14952 transitions. Word has length 599 [2020-10-28 13:11:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:24,339 INFO L481 AbstractCegarLoop]: Abstraction has 13296 states and 14952 transitions. [2020-10-28 13:11:24,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:11:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13296 states and 14952 transitions. [2020-10-28 13:11:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-10-28 13:11:24,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:24,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:24,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:11:24,352 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1010055705, now seen corresponding path program 1 times [2020-10-28 13:11:24,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:24,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877093672] [2020-10-28 13:11:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-28 13:11:29,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:11:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:11:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:29,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 449 [2020-10-28 13:11:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:11:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:29,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:29,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:29,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:11:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:30,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:30,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:11:30,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:11:30,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:30,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:30,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:11:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-28 13:11:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:30,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:11:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-28 13:11:30,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877093672] [2020-10-28 13:11:30,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:11:30,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:11:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235606642] [2020-10-28 13:11:30,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:11:30,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:30,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:11:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:30,933 INFO L87 Difference]: Start difference. First operand 13296 states and 14952 transitions. Second operand 5 states. [2020-10-28 13:11:31,080 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:11:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:38,308 INFO L93 Difference]: Finished difference Result 14836 states and 16597 transitions. [2020-10-28 13:11:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:38,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 642 [2020-10-28 13:11:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:38,351 INFO L225 Difference]: With dead ends: 14836 [2020-10-28 13:11:38,351 INFO L226 Difference]: Without dead ends: 14833 [2020-10-28 13:11:38,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:11:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14833 states. [2020-10-28 13:11:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14833 to 13603. [2020-10-28 13:11:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13603 states. [2020-10-28 13:11:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13603 states to 13603 states and 15312 transitions. [2020-10-28 13:11:38,628 INFO L78 Accepts]: Start accepts. Automaton has 13603 states and 15312 transitions. Word has length 642 [2020-10-28 13:11:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:38,629 INFO L481 AbstractCegarLoop]: Abstraction has 13603 states and 15312 transitions. [2020-10-28 13:11:38,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:11:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13603 states and 15312 transitions. [2020-10-28 13:11:38,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-10-28 13:11:38,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:38,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:11:38,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:11:38,646 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:38,647 INFO L82 PathProgramCache]: Analyzing trace with hash 871351212, now seen corresponding path program 1 times [2020-10-28 13:11:38,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:38,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518983396] [2020-10-28 13:11:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:43,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 666 [2020-10-28 13:11:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:44,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:44,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:11:44,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:44,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:11:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:44,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:11:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:44,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 13:11:44,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:11:44,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:44,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-28 13:11:44,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-28 13:11:45,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518983396] [2020-10-28 13:11:45,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:45,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:11:45,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934901029] [2020-10-28 13:11:45,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:11:45,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:45,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:11:45,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:45,113 INFO L87 Difference]: Start difference. First operand 13603 states and 15312 transitions. Second operand 5 states. [2020-10-28 13:11:47,410 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:11:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:55,628 INFO L93 Difference]: Finished difference Result 28097 states and 31812 transitions. [2020-10-28 13:11:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:55,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 691 [2020-10-28 13:11:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:55,683 INFO L225 Difference]: With dead ends: 28097 [2020-10-28 13:11:55,683 INFO L226 Difference]: Without dead ends: 15113 [2020-10-28 13:11:55,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:11:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15113 states. [2020-10-28 13:11:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15113 to 14497. [2020-10-28 13:11:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14497 states. [2020-10-28 13:11:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 16142 transitions. [2020-10-28 13:11:56,003 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 16142 transitions. Word has length 691 [2020-10-28 13:11:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:56,004 INFO L481 AbstractCegarLoop]: Abstraction has 14497 states and 16142 transitions. [2020-10-28 13:11:56,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:11:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 16142 transitions. [2020-10-28 13:11:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-28 13:11:56,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:56,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:56,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:11:56,026 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1513539531, now seen corresponding path program 1 times [2020-10-28 13:11:56,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:56,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274940089] [2020-10-28 13:11:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking...