/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:19:08,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:19:08,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:19:08,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:19:08,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:19:08,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:19:08,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:19:08,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:19:08,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:19:08,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:19:08,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:19:08,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:19:08,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:19:08,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:19:08,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:19:08,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:19:08,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:19:08,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:19:08,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:19:08,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:19:08,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:19:08,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:19:08,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:19:08,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:19:08,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:19:08,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:19:08,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:19:08,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:19:08,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:19:08,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:19:08,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:19:08,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:19:08,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:19:08,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:19:08,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:19:08,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:19:08,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:19:08,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:19:08,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:19:08,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:19:08,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:19:08,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:19:08,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:19:08,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:19:08,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:19:08,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:19:08,781 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:19:08,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:19:08,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:19:08,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:19:08,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:19:08,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:19:08,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:19:08,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:19:08,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:19:08,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:19:08,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:19:08,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:19:08,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:19:08,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:19:08,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:19:08,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:19:08,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:19:08,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:19:08,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:19:08,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:19:08,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:19:08,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:19:08,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:19:08,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:19:08,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:19:08,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:19:09,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:19:09,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:19:09,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:19:09,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:19:09,364 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:19:09,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label00.c [2020-10-26 23:19:09,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deca6cd85/26aebcb1e81349e6b3af85ed93d35043/FLAG42789db0a [2020-10-26 23:19:10,320 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:19:10,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label00.c [2020-10-26 23:19:10,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deca6cd85/26aebcb1e81349e6b3af85ed93d35043/FLAG42789db0a [2020-10-26 23:19:10,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deca6cd85/26aebcb1e81349e6b3af85ed93d35043 [2020-10-26 23:19:10,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:19:10,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:19:10,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:10,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:19:10,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:19:10,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:10" (1/1) ... [2020-10-26 23:19:10,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c34af26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:10, skipping insertion in model container [2020-10-26 23:19:10,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:10" (1/1) ... [2020-10-26 23:19:10,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:19:10,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:19:11,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:11,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:19:11,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:11,586 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:19:11,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11 WrapperNode [2020-10-26 23:19:11,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:11,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:19:11,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:19:11,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:19:11,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... [2020-10-26 23:19:11,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:19:11,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:19:11,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:19:11,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:19:11,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:19:11,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:19:11,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:19:11,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:19:11,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:19:11,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:19:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:19:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:19:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:19:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:19:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:19:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:19:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:19:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:19:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:19:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:19:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:19:11,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:19:11,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:19:13,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:19:13,560 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:19:13,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:13 BoogieIcfgContainer [2020-10-26 23:19:13,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:19:13,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:19:13,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:19:13,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:19:13,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:19:10" (1/3) ... [2020-10-26 23:19:13,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c06786f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:13, skipping insertion in model container [2020-10-26 23:19:13,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:11" (2/3) ... [2020-10-26 23:19:13,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c06786f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:13, skipping insertion in model container [2020-10-26 23:19:13,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:13" (3/3) ... [2020-10-26 23:19:13,574 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label00.c [2020-10-26 23:19:13,590 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:19:13,598 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:19:13,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:19:13,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:19:13,650 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:19:13,650 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:19:13,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:19:13,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:19:13,651 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:19:13,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:19:13,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:19:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:19:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-26 23:19:13,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:13,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:13,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:13,700 INFO L82 PathProgramCache]: Analyzing trace with hash 163310696, now seen corresponding path program 1 times [2020-10-26 23:19:13,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:13,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728702906] [2020-10-26 23:19:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:19:14,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-26 23:19:14,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 23:19:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:19:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:14,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:19:14,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:14,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:14,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728702906] [2020-10-26 23:19:14,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:14,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:19:14,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865293450] [2020-10-26 23:19:14,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:19:14,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:14,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:19:14,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:19:14,919 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:19:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:17,672 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:19:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:19:17,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-26 23:19:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:17,696 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:19:17,696 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:19:17,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:19:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:19:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:19:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:19:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:19:17,826 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 60 [2020-10-26 23:19:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:17,827 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:19:17,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:19:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:19:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 23:19:17,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:17,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:19:17,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:19:17,844 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash -299312620, now seen corresponding path program 1 times [2020-10-26 23:19:17,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:17,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252606774] [2020-10-26 23:19:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:17,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:19,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:19:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-10-26 23:19:19,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:19:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:19,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:19,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:19:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:20,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:19:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:19:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:20,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252606774] [2020-10-26 23:19:20,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:20,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:19:20,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401997450] [2020-10-26 23:19:20,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:20,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:20,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:20,261 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-26 23:19:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:23,442 INFO L93 Difference]: Finished difference Result 1147 states and 1714 transitions. [2020-10-26 23:19:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:19:23,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-26 23:19:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:23,451 INFO L225 Difference]: With dead ends: 1147 [2020-10-26 23:19:23,452 INFO L226 Difference]: Without dead ends: 776 [2020-10-26 23:19:23,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:19:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-26 23:19:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 753. [2020-10-26 23:19:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-26 23:19:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 995 transitions. [2020-10-26 23:19:23,559 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 995 transitions. Word has length 129 [2020-10-26 23:19:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:23,559 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 995 transitions. [2020-10-26 23:19:23,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 995 transitions. [2020-10-26 23:19:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 23:19:23,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:23,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:19:23,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:19:23,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash -914546164, now seen corresponding path program 1 times [2020-10-26 23:19:23,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:23,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133766385] [2020-10-26 23:19:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:25,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:25,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:19:25,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-26 23:19:25,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:19:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:25,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:25,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:25,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:25,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:19:25,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:25,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:25,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:19:25,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:19:25,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:19:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:25,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133766385] [2020-10-26 23:19:25,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:25,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:19:25,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485506140] [2020-10-26 23:19:25,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:25,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:25,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:25,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:25,824 INFO L87 Difference]: Start difference. First operand 753 states and 995 transitions. Second operand 7 states. [2020-10-26 23:19:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:28,910 INFO L93 Difference]: Finished difference Result 1710 states and 2228 transitions. [2020-10-26 23:19:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:19:28,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-26 23:19:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:28,919 INFO L225 Difference]: With dead ends: 1710 [2020-10-26 23:19:28,919 INFO L226 Difference]: Without dead ends: 963 [2020-10-26 23:19:28,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:19:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-26 23:19:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 937. [2020-10-26 23:19:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:19:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1195 transitions. [2020-10-26 23:19:28,971 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1195 transitions. Word has length 133 [2020-10-26 23:19:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:28,972 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1195 transitions. [2020-10-26 23:19:28,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1195 transitions. [2020-10-26 23:19:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-26 23:19:28,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:28,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:19:28,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:19:28,979 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:28,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2049966220, now seen corresponding path program 1 times [2020-10-26 23:19:28,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:28,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021620462] [2020-10-26 23:19:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:29,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:29,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 23:19:29,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:29,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-26 23:19:29,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:19:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 23:19:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:19:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:29,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:19:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:19:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:19:29,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:19:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:29,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021620462] [2020-10-26 23:19:29,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:29,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:19:29,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097895167] [2020-10-26 23:19:29,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:19:29,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:29,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:19:29,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:19:29,813 INFO L87 Difference]: Start difference. First operand 937 states and 1195 transitions. Second operand 6 states. [2020-10-26 23:19:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:33,866 INFO L93 Difference]: Finished difference Result 2800 states and 3774 transitions. [2020-10-26 23:19:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:19:33,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-26 23:19:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:33,879 INFO L225 Difference]: With dead ends: 2800 [2020-10-26 23:19:33,880 INFO L226 Difference]: Without dead ends: 1869 [2020-10-26 23:19:33,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-10-26 23:19:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1865. [2020-10-26 23:19:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-26 23:19:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2405 transitions. [2020-10-26 23:19:33,965 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2405 transitions. Word has length 144 [2020-10-26 23:19:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:33,967 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 2405 transitions. [2020-10-26 23:19:33,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:19:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2405 transitions. [2020-10-26 23:19:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 23:19:33,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:33,978 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:33,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:19:33,978 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1256886620, now seen corresponding path program 1 times [2020-10-26 23:19:33,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:33,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166228112] [2020-10-26 23:19:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:37,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:37,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 23:19:37,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:19:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3147 [2020-10-26 23:19:37,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:19:37,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-26 23:19:37,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:37,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:19:37,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:37,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:19:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:19:37,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:19:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:19:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:38,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:38,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:19:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:19:38,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166228112] [2020-10-26 23:19:38,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:38,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:38,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179612350] [2020-10-26 23:19:38,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:19:38,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:19:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:38,822 INFO L87 Difference]: Start difference. First operand 1865 states and 2405 transitions. Second operand 8 states. [2020-10-26 23:19:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:42,247 INFO L93 Difference]: Finished difference Result 3614 states and 4883 transitions. [2020-10-26 23:19:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:19:42,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-10-26 23:19:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:42,264 INFO L225 Difference]: With dead ends: 3614 [2020-10-26 23:19:42,264 INFO L226 Difference]: Without dead ends: 2121 [2020-10-26 23:19:42,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:19:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2020-10-26 23:19:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2061. [2020-10-26 23:19:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-26 23:19:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2626 transitions. [2020-10-26 23:19:42,360 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2626 transitions. Word has length 274 [2020-10-26 23:19:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:42,361 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2626 transitions. [2020-10-26 23:19:42,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:19:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2626 transitions. [2020-10-26 23:19:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-26 23:19:42,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:42,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:19:42,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:19:42,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:42,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1429715120, now seen corresponding path program 1 times [2020-10-26 23:19:42,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:42,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540180059] [2020-10-26 23:19:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:47,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-26 23:19:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:19:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:19:47,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:19:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:19:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:19:47,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:47,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:19:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:47,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:19:47,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:19:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:19:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:48,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:19:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:48,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:19:48,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:19:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:19:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:19:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-26 23:19:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:48,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:19:48,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-26 23:19:48,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:19:48,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 224 proven. 156 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 23:19:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540180059] [2020-10-26 23:19:49,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:49,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:19:49,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923339214] [2020-10-26 23:19:49,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:19:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:19:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:19:49,419 INFO L87 Difference]: Start difference. First operand 2061 states and 2626 transitions. Second operand 11 states. [2020-10-26 23:19:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:53,093 INFO L93 Difference]: Finished difference Result 3635 states and 4791 transitions. [2020-10-26 23:19:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:19:53,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 347 [2020-10-26 23:19:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:53,114 INFO L225 Difference]: With dead ends: 3635 [2020-10-26 23:19:53,114 INFO L226 Difference]: Without dead ends: 2087 [2020-10-26 23:19:53,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:19:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-26 23:19:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2059. [2020-10-26 23:19:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-26 23:19:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2448 transitions. [2020-10-26 23:19:53,195 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2448 transitions. Word has length 347 [2020-10-26 23:19:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:53,195 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2448 transitions. [2020-10-26 23:19:53,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:19:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2448 transitions. [2020-10-26 23:19:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-26 23:19:53,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:53,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:19:53,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:19:53,206 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1331161880, now seen corresponding path program 1 times [2020-10-26 23:19:53,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:53,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195013996] [2020-10-26 23:19:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:55,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-26 23:19:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:19:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:19:58,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:19:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:19:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:19:58,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:19:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:19:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:19:58,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:19:58,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:19:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-26 23:19:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:19:58,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:19:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:19:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 156 proven. 172 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 23:19:59,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195013996] [2020-10-26 23:19:59,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:59,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:59,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754715291] [2020-10-26 23:19:59,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:59,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:59,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:59,146 INFO L87 Difference]: Start difference. First operand 2059 states and 2448 transitions. Second operand 7 states. [2020-10-26 23:20:01,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:01,715 INFO L93 Difference]: Finished difference Result 3774 states and 4544 transitions. [2020-10-26 23:20:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:20:01,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-26 23:20:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:01,733 INFO L225 Difference]: With dead ends: 3774 [2020-10-26 23:20:01,734 INFO L226 Difference]: Without dead ends: 2087 [2020-10-26 23:20:01,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:20:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-26 23:20:01,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2069. [2020-10-26 23:20:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-10-26 23:20:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2366 transitions. [2020-10-26 23:20:01,814 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2366 transitions. Word has length 361 [2020-10-26 23:20:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:01,815 INFO L481 AbstractCegarLoop]: Abstraction has 2069 states and 2366 transitions. [2020-10-26 23:20:01,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2366 transitions. [2020-10-26 23:20:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-26 23:20:01,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:01,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:20:01,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:20:01,828 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:01,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2127141112, now seen corresponding path program 1 times [2020-10-26 23:20:01,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:01,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874259399] [2020-10-26 23:20:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-26 23:20:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:20:06,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:20:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:20:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:20:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:20:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:20:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:20:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-26 23:20:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:20:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-26 23:20:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:07,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:20:07,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 241 proven. 118 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 23:20:08,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874259399] [2020-10-26 23:20:08,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:08,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:20:08,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363989405] [2020-10-26 23:20:08,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:20:08,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:08,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:20:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:20:08,354 INFO L87 Difference]: Start difference. First operand 2069 states and 2366 transitions. Second operand 6 states. [2020-10-26 23:20:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:10,351 INFO L93 Difference]: Finished difference Result 3715 states and 4328 transitions. [2020-10-26 23:20:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:20:10,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 403 [2020-10-26 23:20:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:10,361 INFO L225 Difference]: With dead ends: 3715 [2020-10-26 23:20:10,362 INFO L226 Difference]: Without dead ends: 1911 [2020-10-26 23:20:10,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:20:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-26 23:20:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1877. [2020-10-26 23:20:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-26 23:20:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2082 transitions. [2020-10-26 23:20:10,457 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2082 transitions. Word has length 403 [2020-10-26 23:20:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:10,458 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2082 transitions. [2020-10-26 23:20:10,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:20:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2082 transitions. [2020-10-26 23:20:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-26 23:20:10,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:10,479 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:10,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:20:10,480 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash 610262248, now seen corresponding path program 1 times [2020-10-26 23:20:10,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:10,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589889458] [2020-10-26 23:20:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:20:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:15,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:15,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:20:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:20:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:20:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:20:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:20:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:20:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:16,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-26 23:20:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:16,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:20:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:20:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 494 proven. 179 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-26 23:20:16,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589889458] [2020-10-26 23:20:16,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:16,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:16,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055659354] [2020-10-26 23:20:16,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:16,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:16,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:16,814 INFO L87 Difference]: Start difference. First operand 1877 states and 2082 transitions. Second operand 7 states. [2020-10-26 23:20:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:20,567 INFO L93 Difference]: Finished difference Result 4136 states and 4739 transitions. [2020-10-26 23:20:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:20:20,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 581 [2020-10-26 23:20:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:20,583 INFO L225 Difference]: With dead ends: 4136 [2020-10-26 23:20:20,583 INFO L226 Difference]: Without dead ends: 2631 [2020-10-26 23:20:20,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2020-10-26 23:20:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2621. [2020-10-26 23:20:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2621 states. [2020-10-26 23:20:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3006 transitions. [2020-10-26 23:20:20,693 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3006 transitions. Word has length 581 [2020-10-26 23:20:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:20,694 INFO L481 AbstractCegarLoop]: Abstraction has 2621 states and 3006 transitions. [2020-10-26 23:20:20,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3006 transitions. [2020-10-26 23:20:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-26 23:20:20,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:20,705 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:20,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:20:20,705 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2109515860, now seen corresponding path program 1 times [2020-10-26 23:20:20,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:20,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879319951] [2020-10-26 23:20:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:25,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:20:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:26,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:20:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:20:26,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:20:26,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:20:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:20:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-26 23:20:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 632 proven. 188 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-10-26 23:20:27,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879319951] [2020-10-26 23:20:27,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:27,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:27,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212626776] [2020-10-26 23:20:27,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:27,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:27,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:27,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:27,397 INFO L87 Difference]: Start difference. First operand 2621 states and 3006 transitions. Second operand 8 states. [2020-10-26 23:20:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:29,864 INFO L93 Difference]: Finished difference Result 5622 states and 6580 transitions. [2020-10-26 23:20:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:20:29,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 588 [2020-10-26 23:20:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:29,886 INFO L225 Difference]: With dead ends: 5622 [2020-10-26 23:20:29,886 INFO L226 Difference]: Without dead ends: 3373 [2020-10-26 23:20:29,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:20:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2020-10-26 23:20:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3363. [2020-10-26 23:20:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2020-10-26 23:20:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 3784 transitions. [2020-10-26 23:20:29,988 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 3784 transitions. Word has length 588 [2020-10-26 23:20:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:29,989 INFO L481 AbstractCegarLoop]: Abstraction has 3363 states and 3784 transitions. [2020-10-26 23:20:29,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 3784 transitions. [2020-10-26 23:20:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2020-10-26 23:20:30,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:30,001 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:30,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:20:30,001 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:30,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1573496508, now seen corresponding path program 1 times [2020-10-26 23:20:30,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:30,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611230732] [2020-10-26 23:20:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 769 [2020-10-26 23:20:35,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:20:35,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:20:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:20:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:20:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:35,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:20:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:20:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:20:35,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:20:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:20:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:20:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:20:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 623 proven. 72 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2020-10-26 23:20:36,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611230732] [2020-10-26 23:20:36,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:36,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:36,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977382353] [2020-10-26 23:20:36,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:36,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:36,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:36,276 INFO L87 Difference]: Start difference. First operand 3363 states and 3784 transitions. Second operand 7 states. [2020-10-26 23:20:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:39,696 INFO L93 Difference]: Finished difference Result 6922 states and 7915 transitions. [2020-10-26 23:20:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:20:39,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 747 [2020-10-26 23:20:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:39,717 INFO L225 Difference]: With dead ends: 6922 [2020-10-26 23:20:39,717 INFO L226 Difference]: Without dead ends: 3931 [2020-10-26 23:20:39,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2020-10-26 23:20:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3915. [2020-10-26 23:20:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3915 states. [2020-10-26 23:20:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 4391 transitions. [2020-10-26 23:20:39,865 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 4391 transitions. Word has length 747 [2020-10-26 23:20:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:39,866 INFO L481 AbstractCegarLoop]: Abstraction has 3915 states and 4391 transitions. [2020-10-26 23:20:39,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 4391 transitions. [2020-10-26 23:20:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-26 23:20:39,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:39,879 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:39,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:20:39,879 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash -13172776, now seen corresponding path program 1 times [2020-10-26 23:20:39,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:39,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044481003] [2020-10-26 23:20:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-26 23:20:45,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:20:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:20:45,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:20:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:20:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:45,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:20:45,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:20:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:20:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:20:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:20:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:20:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:20:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-10-26 23:20:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 703 proven. 145 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2020-10-26 23:20:46,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044481003] [2020-10-26 23:20:46,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:46,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:46,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623967353] [2020-10-26 23:20:46,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:46,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:46,115 INFO L87 Difference]: Start difference. First operand 3915 states and 4391 transitions. Second operand 7 states. [2020-10-26 23:20:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:48,256 INFO L93 Difference]: Finished difference Result 8404 states and 9611 transitions. [2020-10-26 23:20:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:20:48,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 823 [2020-10-26 23:20:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:48,281 INFO L225 Difference]: With dead ends: 8404 [2020-10-26 23:20:48,281 INFO L226 Difference]: Without dead ends: 4861 [2020-10-26 23:20:48,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2020-10-26 23:20:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 4851. [2020-10-26 23:20:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4851 states. [2020-10-26 23:20:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 5527 transitions. [2020-10-26 23:20:48,437 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 5527 transitions. Word has length 823 [2020-10-26 23:20:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:48,439 INFO L481 AbstractCegarLoop]: Abstraction has 4851 states and 5527 transitions. [2020-10-26 23:20:48,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 5527 transitions. [2020-10-26 23:20:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2020-10-26 23:20:48,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:48,454 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:48,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:20:48,455 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1369177164, now seen corresponding path program 1 times [2020-10-26 23:20:48,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:48,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774741269] [2020-10-26 23:20:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 865 [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:20:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:20:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:53,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:53,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:53,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:53,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:20:54,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:20:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:20:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:20:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:20:54,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:54,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:20:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-26 23:20:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:54,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:20:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 737 proven. 261 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2020-10-26 23:20:55,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774741269] [2020-10-26 23:20:55,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:55,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:55,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220311358] [2020-10-26 23:20:55,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:55,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:55,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:55,182 INFO L87 Difference]: Start difference. First operand 4851 states and 5527 transitions. Second operand 7 states. [2020-10-26 23:20:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:57,848 INFO L93 Difference]: Finished difference Result 10632 states and 12344 transitions. [2020-10-26 23:20:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:20:57,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 841 [2020-10-26 23:20:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:57,890 INFO L225 Difference]: With dead ends: 10632 [2020-10-26 23:20:57,892 INFO L226 Difference]: Without dead ends: 6153 [2020-10-26 23:20:57,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:20:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6153 states. [2020-10-26 23:20:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6153 to 5773. [2020-10-26 23:20:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-26 23:20:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 6497 transitions. [2020-10-26 23:20:58,181 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 6497 transitions. Word has length 841 [2020-10-26 23:20:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:58,182 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 6497 transitions. [2020-10-26 23:20:58,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 6497 transitions. [2020-10-26 23:20:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2020-10-26 23:20:58,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:58,202 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:58,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:20:58,203 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash -277912404, now seen corresponding path program 1 times [2020-10-26 23:20:58,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:58,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963299162] [2020-10-26 23:20:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:21:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:21:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:03,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:03,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:21:03,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:03,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:04,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:21:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:21:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 23:21:04,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:21:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:21:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2020-10-26 23:21:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:04,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:04,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:21:04,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2535 backedges. 894 proven. 188 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2020-10-26 23:21:05,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963299162] [2020-10-26 23:21:05,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:05,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:05,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59521289] [2020-10-26 23:21:05,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:05,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:05,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:05,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:05,735 INFO L87 Difference]: Start difference. First operand 5773 states and 6497 transitions. Second operand 7 states. [2020-10-26 23:21:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:08,188 INFO L93 Difference]: Finished difference Result 11362 states and 12808 transitions. [2020-10-26 23:21:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:08,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 909 [2020-10-26 23:21:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:08,207 INFO L225 Difference]: With dead ends: 11362 [2020-10-26 23:21:08,207 INFO L226 Difference]: Without dead ends: 5779 [2020-10-26 23:21:08,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:21:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2020-10-26 23:21:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5775. [2020-10-26 23:21:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5775 states. [2020-10-26 23:21:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5775 states to 5775 states and 6398 transitions. [2020-10-26 23:21:08,380 INFO L78 Accepts]: Start accepts. Automaton has 5775 states and 6398 transitions. Word has length 909 [2020-10-26 23:21:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:08,381 INFO L481 AbstractCegarLoop]: Abstraction has 5775 states and 6398 transitions. [2020-10-26 23:21:08,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5775 states and 6398 transitions. [2020-10-26 23:21:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-10-26 23:21:08,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:08,400 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:08,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:21:08,400 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:08,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1950706888, now seen corresponding path program 1 times [2020-10-26 23:21:08,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:08,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625728961] [2020-10-26 23:21:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:21:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:13,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:13,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:21:13,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:21:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:21:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:21:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:21:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2535 backedges. 754 proven. 72 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2020-10-26 23:21:15,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625728961] [2020-10-26 23:21:15,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:15,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:15,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823098361] [2020-10-26 23:21:15,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:15,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:15,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:15,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:15,125 INFO L87 Difference]: Start difference. First operand 5775 states and 6398 transitions. Second operand 7 states. [2020-10-26 23:21:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:17,499 INFO L93 Difference]: Finished difference Result 11548 states and 12840 transitions. [2020-10-26 23:21:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:21:17,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 920 [2020-10-26 23:21:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:17,529 INFO L225 Difference]: With dead ends: 11548 [2020-10-26 23:21:17,529 INFO L226 Difference]: Without dead ends: 5963 [2020-10-26 23:21:17,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:21:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5963 states. [2020-10-26 23:21:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5963 to 5959. [2020-10-26 23:21:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5959 states. [2020-10-26 23:21:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 6564 transitions. [2020-10-26 23:21:17,781 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 6564 transitions. Word has length 920 [2020-10-26 23:21:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:17,783 INFO L481 AbstractCegarLoop]: Abstraction has 5959 states and 6564 transitions. [2020-10-26 23:21:17,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 6564 transitions. [2020-10-26 23:21:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2020-10-26 23:21:17,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:17,808 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:17,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:21:17,808 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:17,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:17,809 INFO L82 PathProgramCache]: Analyzing trace with hash 872602644, now seen corresponding path program 1 times [2020-10-26 23:21:17,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:17,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792082507] [2020-10-26 23:21:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:21,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1074 [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:21:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:21:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:21:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:21:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:21:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:21:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:23,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:21:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:23,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:21:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 875 [2020-10-26 23:21:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3821 backedges. 1592 proven. 271 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2020-10-26 23:21:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792082507] [2020-10-26 23:21:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:25,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:21:25,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412274994] [2020-10-26 23:21:25,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:21:25,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:21:25,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:21:25,041 INFO L87 Difference]: Start difference. First operand 5959 states and 6564 transitions. Second operand 10 states. [2020-10-26 23:21:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:28,025 INFO L93 Difference]: Finished difference Result 13259 states and 14860 transitions. [2020-10-26 23:21:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:21:28,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1046 [2020-10-26 23:21:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:28,061 INFO L225 Difference]: With dead ends: 13259 [2020-10-26 23:21:28,061 INFO L226 Difference]: Without dead ends: 7455 [2020-10-26 23:21:28,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:21:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2020-10-26 23:21:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7081. [2020-10-26 23:21:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-10-26 23:21:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 7995 transitions. [2020-10-26 23:21:28,236 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 7995 transitions. Word has length 1046 [2020-10-26 23:21:28,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:28,237 INFO L481 AbstractCegarLoop]: Abstraction has 7081 states and 7995 transitions. [2020-10-26 23:21:28,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:21:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 7995 transitions. [2020-10-26 23:21:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-26 23:21:28,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:28,263 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:28,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:21:28,263 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash 563000332, now seen corresponding path program 1 times [2020-10-26 23:21:28,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:28,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13024007] [2020-10-26 23:21:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:33,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:21:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:33,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:21:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:33,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:21:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:34,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:21:34,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-26 23:21:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:21:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:21:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:21:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:21:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:21:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:21:35,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:21:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:21:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 908 [2020-10-26 23:21:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:35,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3862 backedges. 1628 proven. 276 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2020-10-26 23:21:36,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13024007] [2020-10-26 23:21:36,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:36,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:21:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244701812] [2020-10-26 23:21:36,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:21:36,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:21:36,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:21:36,164 INFO L87 Difference]: Start difference. First operand 7081 states and 7995 transitions. Second operand 10 states. [2020-10-26 23:21:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:39,588 INFO L93 Difference]: Finished difference Result 14379 states and 16269 transitions. [2020-10-26 23:21:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:21:39,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1079 [2020-10-26 23:21:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:39,615 INFO L225 Difference]: With dead ends: 14379 [2020-10-26 23:21:39,615 INFO L226 Difference]: Without dead ends: 7455 [2020-10-26 23:21:39,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:21:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2020-10-26 23:21:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7081. [2020-10-26 23:21:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-10-26 23:21:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 7988 transitions. [2020-10-26 23:21:39,790 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 7988 transitions. Word has length 1079 [2020-10-26 23:21:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:39,791 INFO L481 AbstractCegarLoop]: Abstraction has 7081 states and 7988 transitions. [2020-10-26 23:21:39,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:21:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 7988 transitions. [2020-10-26 23:21:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2020-10-26 23:21:39,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:39,815 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:39,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:21:39,815 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1086536784, now seen corresponding path program 1 times [2020-10-26 23:21:39,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:39,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903409706] [2020-10-26 23:21:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-26 23:21:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-26 23:21:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:21:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:21:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:21:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:45,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:21:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:21:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:21:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:21:45,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:21:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:21:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:21:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:21:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:21:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:21:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:46,347 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-26 23:21:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 909 [2020-10-26 23:21:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:46,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:46,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:21:46,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3863 backedges. 1629 proven. 276 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2020-10-26 23:21:47,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903409706] [2020-10-26 23:21:47,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:47,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:21:47,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962213492] [2020-10-26 23:21:47,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:21:47,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:21:47,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:21:47,845 INFO L87 Difference]: Start difference. First operand 7081 states and 7988 transitions. Second operand 10 states. [2020-10-26 23:21:51,505 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 23:21:52,097 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-26 23:21:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:52,296 INFO L93 Difference]: Finished difference Result 14409 states and 16284 transitions. [2020-10-26 23:21:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:21:52,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1080 [2020-10-26 23:21:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:52,320 INFO L225 Difference]: With dead ends: 14409 [2020-10-26 23:21:52,320 INFO L226 Difference]: Without dead ends: 7483 [2020-10-26 23:21:52,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-10-26 23:21:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7483 states. [2020-10-26 23:21:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7483 to 7079. [2020-10-26 23:21:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7079 states. [2020-10-26 23:21:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7079 states to 7079 states and 7965 transitions. [2020-10-26 23:21:52,483 INFO L78 Accepts]: Start accepts. Automaton has 7079 states and 7965 transitions. Word has length 1080 [2020-10-26 23:21:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:52,484 INFO L481 AbstractCegarLoop]: Abstraction has 7079 states and 7965 transitions. [2020-10-26 23:21:52,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:21:52,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7079 states and 7965 transitions. [2020-10-26 23:21:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-26 23:21:52,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:52,507 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:52,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:21:52,507 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1319553204, now seen corresponding path program 1 times [2020-10-26 23:21:52,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:52,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131928755] [2020-10-26 23:21:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:21:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:21:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:58,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:58,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:21:58,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:58,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:58,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:58,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:58,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:21:58,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:58,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:58,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:21:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:21:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:21:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:21:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:21:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:21:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:21:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 920 [2020-10-26 23:21:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:59,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:21:59,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:21:59,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-26 23:21:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3853 backedges. 1112 proven. 268 refuted. 0 times theorem prover too weak. 2473 trivial. 0 not checked. [2020-10-26 23:22:00,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131928755] [2020-10-26 23:22:00,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:00,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:00,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54113876] [2020-10-26 23:22:00,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:22:00,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:00,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:22:00,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:00,308 INFO L87 Difference]: Start difference. First operand 7079 states and 7965 transitions. Second operand 8 states. [2020-10-26 23:22:01,691 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:22:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:03,266 INFO L93 Difference]: Finished difference Result 13972 states and 15743 transitions. [2020-10-26 23:22:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:03,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1091 [2020-10-26 23:22:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:03,280 INFO L225 Difference]: With dead ends: 13972 [2020-10-26 23:22:03,280 INFO L226 Difference]: Without dead ends: 7083 [2020-10-26 23:22:03,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7083 states. [2020-10-26 23:22:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7083 to 7079. [2020-10-26 23:22:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7079 states. [2020-10-26 23:22:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7079 states to 7079 states and 7959 transitions. [2020-10-26 23:22:03,437 INFO L78 Accepts]: Start accepts. Automaton has 7079 states and 7959 transitions. Word has length 1091 [2020-10-26 23:22:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:03,438 INFO L481 AbstractCegarLoop]: Abstraction has 7079 states and 7959 transitions. [2020-10-26 23:22:03,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7079 states and 7959 transitions. [2020-10-26 23:22:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1108 [2020-10-26 23:22:03,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:03,459 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:03,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:22:03,460 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:03,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1509013308, now seen corresponding path program 1 times [2020-10-26 23:22:03,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:03,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201381218] [2020-10-26 23:22:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:08,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1135 [2020-10-26 23:22:08,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:22:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-26 23:22:08,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:22:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-26 23:22:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:08,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:08,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:08,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:08,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:08,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:09,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:09,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:09,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:22:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:22:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:09,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:22:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:22:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:22:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 936 [2020-10-26 23:22:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:22:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3866 backedges. 2220 proven. 196 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2020-10-26 23:22:10,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201381218] [2020-10-26 23:22:10,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:10,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:22:10,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636411690] [2020-10-26 23:22:10,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:22:10,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:22:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:10,801 INFO L87 Difference]: Start difference. First operand 7079 states and 7959 transitions. Second operand 10 states. [2020-10-26 23:22:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:14,947 INFO L93 Difference]: Finished difference Result 14706 states and 16633 transitions. [2020-10-26 23:22:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:22:14,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1107 [2020-10-26 23:22:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:14,965 INFO L225 Difference]: With dead ends: 14706 [2020-10-26 23:22:14,965 INFO L226 Difference]: Without dead ends: 7817 [2020-10-26 23:22:14,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:22:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2020-10-26 23:22:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 7445. [2020-10-26 23:22:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7445 states. [2020-10-26 23:22:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 8350 transitions. [2020-10-26 23:22:15,128 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 8350 transitions. Word has length 1107 [2020-10-26 23:22:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:15,129 INFO L481 AbstractCegarLoop]: Abstraction has 7445 states and 8350 transitions. [2020-10-26 23:22:15,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:22:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 8350 transitions. [2020-10-26 23:22:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1166 [2020-10-26 23:22:15,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:15,149 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:22:15,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:22:15,149 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash 505803432, now seen corresponding path program 1 times [2020-10-26 23:22:15,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744264296] [2020-10-26 23:22:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking...