/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:08:41,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:08:41,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:08:41,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:08:41,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:08:41,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:08:41,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:08:41,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:08:41,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:08:41,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:08:41,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:08:41,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:08:41,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:08:41,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:08:41,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:08:41,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:08:41,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:08:41,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:08:41,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:08:41,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:08:41,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:08:41,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:08:41,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:08:41,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:08:41,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:08:41,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:08:41,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:08:41,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:08:41,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:08:41,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:08:41,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:08:41,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:08:41,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:08:41,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:08:41,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:08:41,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:08:41,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:08:41,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:08:41,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:08:41,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:08:41,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:08:41,700 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 [2020-10-14 19:08:41,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:08:41,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:08:41,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:08:41,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:08:41,732 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:08:41,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:08:41,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:08:41,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:08:41,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:08:41,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:08:41,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:08:41,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:08:41,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:08:41,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:08:41,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:08:41,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:08:41,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:08:41,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:08:41,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:08:41,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:08:41,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:08:41,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:41,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:08:41,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:08:41,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:08:41,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:08:41,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:08:41,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:08:41,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:08:41,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:08:42,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:08:42,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:08:42,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:08:42,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:08:42,073 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:08:42,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-14 19:08:42,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a644a859f/8227f359d5154463995e06e3356409e4/FLAGf17ba25f6 [2020-10-14 19:08:42,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:08:42,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-14 19:08:42,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a644a859f/8227f359d5154463995e06e3356409e4/FLAGf17ba25f6 [2020-10-14 19:08:42,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a644a859f/8227f359d5154463995e06e3356409e4 [2020-10-14 19:08:42,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:08:42,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:08:42,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:42,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:08:42,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:08:42,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:42" (1/1) ... [2020-10-14 19:08:42,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:42, skipping insertion in model container [2020-10-14 19:08:42,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:42" (1/1) ... [2020-10-14 19:08:43,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:08:43,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:08:43,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:43,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:08:44,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:44,258 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:08:44,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44 WrapperNode [2020-10-14 19:08:44,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:44,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:08:44,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:08:44,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:08:44,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:08:44,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:08:44,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:08:44,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:08:44,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (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 [2020-10-14 19:08:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:08:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:08:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:08:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:08:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:08:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:08:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:08:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:08:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:08:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:08:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:08:46,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:08:46,577 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:08:46,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:46 BoogieIcfgContainer [2020-10-14 19:08:46,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:08:46,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:08:46,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:08:46,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:08:46,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:08:42" (1/3) ... [2020-10-14 19:08:46,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:46, skipping insertion in model container [2020-10-14 19:08:46,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44" (2/3) ... [2020-10-14 19:08:46,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f41101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:46, skipping insertion in model container [2020-10-14 19:08:46,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:46" (3/3) ... [2020-10-14 19:08:46,593 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label12.c [2020-10-14 19:08:46,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:08:46,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:08:46,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:08:46,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:08:46,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:08:46,657 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:08:46,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:08:46,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:08:46,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:08:46,658 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:08:46,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:08:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:08:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 19:08:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:46,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:46,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash 20739176, now seen corresponding path program 1 times [2020-10-14 19:08:46,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:46,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079576704] [2020-10-14 19:08:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:50,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 19:08:50,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3516 [2020-10-14 19:08:50,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:50,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 19:08:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:08:51,169 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:51,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:08:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:51,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:51,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079576704] [2020-10-14 19:08:51,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:08:51,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:08:51,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795386643] [2020-10-14 19:08:51,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:51,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:51,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:51,313 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:08:51,517 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:51,988 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:08:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:55,595 INFO L93 Difference]: Finished difference Result 1104 states and 1964 transitions. [2020-10-14 19:08:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:08:55,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-14 19:08:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:55,637 INFO L225 Difference]: With dead ends: 1104 [2020-10-14 19:08:55,637 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 19:08:55,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:08:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 19:08:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 472. [2020-10-14 19:08:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-14 19:08:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2020-10-14 19:08:55,744 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 169 [2020-10-14 19:08:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:55,745 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2020-10-14 19:08:55,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2020-10-14 19:08:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 19:08:55,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:55,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:55,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:08:55,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:55,760 INFO L82 PathProgramCache]: Analyzing trace with hash -854728277, now seen corresponding path program 1 times [2020-10-14 19:08:55,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:55,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075851495] [2020-10-14 19:08:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 19:08:58,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-14 19:08:58,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:08:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:08:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:58,806 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:08:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:58,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:58,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:08:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:08:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:08:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:59,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075851495] [2020-10-14 19:08:59,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:59,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:08:59,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921494553] [2020-10-14 19:08:59,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:08:59,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:08:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:59,037 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand 6 states. [2020-10-14 19:08:59,254 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:00,017 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:02,885 INFO L93 Difference]: Finished difference Result 1815 states and 2847 transitions. [2020-10-14 19:09:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:09:02,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-10-14 19:09:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:02,901 INFO L225 Difference]: With dead ends: 1815 [2020-10-14 19:09:02,902 INFO L226 Difference]: Without dead ends: 1349 [2020-10-14 19:09:02,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-10-14 19:09:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1316. [2020-10-14 19:09:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-10-14 19:09:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2011 transitions. [2020-10-14 19:09:03,006 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2011 transitions. Word has length 178 [2020-10-14 19:09:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:03,009 INFO L479 AbstractCegarLoop]: Abstraction has 1316 states and 2011 transitions. [2020-10-14 19:09:03,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:09:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2011 transitions. [2020-10-14 19:09:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 19:09:03,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:03,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:03,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:09:03,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash -79815556, now seen corresponding path program 1 times [2020-10-14 19:09:03,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:03,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292548758] [2020-10-14 19:09:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 19:09:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3582 [2020-10-14 19:09:06,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:06,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:09:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:09:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:06,976 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:06,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:06,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:06,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:06,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:06,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:06,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:07,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:07,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:07,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:09:07,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:07,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:09:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:07,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292548758] [2020-10-14 19:09:07,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:07,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:07,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682630087] [2020-10-14 19:09:07,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:07,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:07,150 INFO L87 Difference]: Start difference. First operand 1316 states and 2011 transitions. Second operand 5 states. [2020-10-14 19:09:07,351 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:10,083 INFO L93 Difference]: Finished difference Result 3894 states and 6065 transitions. [2020-10-14 19:09:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:10,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 19:09:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:10,107 INFO L225 Difference]: With dead ends: 3894 [2020-10-14 19:09:10,107 INFO L226 Difference]: Without dead ends: 2584 [2020-10-14 19:09:10,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-10-14 19:09:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2573. [2020-10-14 19:09:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-10-14 19:09:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3824 transitions. [2020-10-14 19:09:10,224 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3824 transitions. Word has length 181 [2020-10-14 19:09:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:10,228 INFO L479 AbstractCegarLoop]: Abstraction has 2573 states and 3824 transitions. [2020-10-14 19:09:10,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3824 transitions. [2020-10-14 19:09:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 19:09:10,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:10,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:10,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:09:10,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1478695438, now seen corresponding path program 1 times [2020-10-14 19:09:10,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:10,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406098548] [2020-10-14 19:09:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 19:09:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:09:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 19:09:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:09:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 19:09:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:15,586 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:15,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:09:15,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:09:15,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:09:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:09:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:15,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:15,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:15,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:09:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:15,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:09:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:09:15,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406098548] [2020-10-14 19:09:15,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:15,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:15,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976979619] [2020-10-14 19:09:15,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:15,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:15,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:15,862 INFO L87 Difference]: Start difference. First operand 2573 states and 3824 transitions. Second operand 5 states. [2020-10-14 19:09:16,313 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:18,847 INFO L93 Difference]: Finished difference Result 6404 states and 9559 transitions. [2020-10-14 19:09:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:18,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 19:09:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:18,861 INFO L225 Difference]: With dead ends: 6404 [2020-10-14 19:09:18,862 INFO L226 Difference]: Without dead ends: 2576 [2020-10-14 19:09:18,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2020-10-14 19:09:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2572. [2020-10-14 19:09:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2572 states. [2020-10-14 19:09:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3822 transitions. [2020-10-14 19:09:18,946 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3822 transitions. Word has length 188 [2020-10-14 19:09:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:18,946 INFO L479 AbstractCegarLoop]: Abstraction has 2572 states and 3822 transitions. [2020-10-14 19:09:18,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3822 transitions. [2020-10-14 19:09:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 19:09:18,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:18,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:18,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:09:18,953 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:18,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:18,954 INFO L82 PathProgramCache]: Analyzing trace with hash 967825119, now seen corresponding path program 1 times [2020-10-14 19:09:18,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:18,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96438869] [2020-10-14 19:09:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 19:09:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2359 [2020-10-14 19:09:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:21,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:09:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:09:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:21,618 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:21,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:21,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:09:21,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:21,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:21,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:21,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:09:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:21,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:09:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:21,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96438869] [2020-10-14 19:09:21,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:21,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:21,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472797163] [2020-10-14 19:09:21,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:21,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:21,873 INFO L87 Difference]: Start difference. First operand 2572 states and 3822 transitions. Second operand 5 states. [2020-10-14 19:09:22,098 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:24,626 INFO L93 Difference]: Finished difference Result 7444 states and 11359 transitions. [2020-10-14 19:09:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:24,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-14 19:09:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:24,654 INFO L225 Difference]: With dead ends: 7444 [2020-10-14 19:09:24,655 INFO L226 Difference]: Without dead ends: 4878 [2020-10-14 19:09:24,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2020-10-14 19:09:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4871. [2020-10-14 19:09:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2020-10-14 19:09:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7262 transitions. [2020-10-14 19:09:24,822 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7262 transitions. Word has length 188 [2020-10-14 19:09:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:24,823 INFO L479 AbstractCegarLoop]: Abstraction has 4871 states and 7262 transitions. [2020-10-14 19:09:24,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7262 transitions. [2020-10-14 19:09:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 19:09:24,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:24,839 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:24,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:09:24,840 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1160675128, now seen corresponding path program 1 times [2020-10-14 19:09:24,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:24,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169399760] [2020-10-14 19:09:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:29,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 19:09:29,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:09:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:29,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:09:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:09:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:30,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:30,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:30,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:30,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:30,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:30,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:09:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:30,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:09:30,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:09:30,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:30,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:09:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:09:30,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169399760] [2020-10-14 19:09:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:30,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:30,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807769994] [2020-10-14 19:09:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:30,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:30,448 INFO L87 Difference]: Start difference. First operand 4871 states and 7262 transitions. Second operand 5 states. [2020-10-14 19:09:30,660 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:33,322 INFO L93 Difference]: Finished difference Result 13092 states and 20206 transitions. [2020-10-14 19:09:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:33,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 19:09:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:33,364 INFO L225 Difference]: With dead ends: 13092 [2020-10-14 19:09:33,364 INFO L226 Difference]: Without dead ends: 8227 [2020-10-14 19:09:33,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8227 states. [2020-10-14 19:09:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8227 to 8220. [2020-10-14 19:09:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8220 states. [2020-10-14 19:09:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 12228 transitions. [2020-10-14 19:09:33,635 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 12228 transitions. Word has length 215 [2020-10-14 19:09:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:33,636 INFO L479 AbstractCegarLoop]: Abstraction has 8220 states and 12228 transitions. [2020-10-14 19:09:33,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 12228 transitions. [2020-10-14 19:09:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 19:09:33,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:33,669 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:33,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:09:33,669 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:33,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:33,670 INFO L82 PathProgramCache]: Analyzing trace with hash 155642117, now seen corresponding path program 1 times [2020-10-14 19:09:33,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:33,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971620619] [2020-10-14 19:09:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1991 [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:35,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 19:09:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:09:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:35,994 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:35,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:36,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:36,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:09:36,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 19:09:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 19:09:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:09:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:36,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971620619] [2020-10-14 19:09:36,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:36,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:36,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889533507] [2020-10-14 19:09:36,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:36,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:36,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:36,468 INFO L87 Difference]: Start difference. First operand 8220 states and 12228 transitions. Second operand 5 states. [2020-10-14 19:09:36,649 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:38,996 INFO L93 Difference]: Finished difference Result 19364 states and 29310 transitions. [2020-10-14 19:09:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:38,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 19:09:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:39,042 INFO L225 Difference]: With dead ends: 19364 [2020-10-14 19:09:39,042 INFO L226 Difference]: Without dead ends: 11150 [2020-10-14 19:09:39,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2020-10-14 19:09:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 10939. [2020-10-14 19:09:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10939 states. [2020-10-14 19:09:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 15159 transitions. [2020-10-14 19:09:39,395 INFO L78 Accepts]: Start accepts. Automaton has 10939 states and 15159 transitions. Word has length 232 [2020-10-14 19:09:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:39,396 INFO L479 AbstractCegarLoop]: Abstraction has 10939 states and 15159 transitions. [2020-10-14 19:09:39,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10939 states and 15159 transitions. [2020-10-14 19:09:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 19:09:39,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:39,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:39,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:09:39,436 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash -325762598, now seen corresponding path program 1 times [2020-10-14 19:09:39,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:39,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868965620] [2020-10-14 19:09:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3769 [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 19:09:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-14 19:09:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:43,574 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:43,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:09:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:43,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:09:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:09:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:09:44,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:44,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 19:09:44,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:09:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:09:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:09:44,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868965620] [2020-10-14 19:09:44,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:44,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:44,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100327822] [2020-10-14 19:09:44,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:09:44,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:44,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:09:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:09:44,211 INFO L87 Difference]: Start difference. First operand 10939 states and 15159 transitions. Second operand 8 states. [2020-10-14 19:09:44,369 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:09:44,604 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:45,225 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:09:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:49,267 INFO L93 Difference]: Finished difference Result 33921 states and 49633 transitions. [2020-10-14 19:09:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:09:49,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-14 19:09:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:49,397 INFO L225 Difference]: With dead ends: 33921 [2020-10-14 19:09:49,397 INFO L226 Difference]: Without dead ends: 22988 [2020-10-14 19:09:49,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:09:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22988 states. [2020-10-14 19:09:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22988 to 22724. [2020-10-14 19:09:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22724 states. [2020-10-14 19:09:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22724 states to 22724 states and 31610 transitions. [2020-10-14 19:09:50,421 INFO L78 Accepts]: Start accepts. Automaton has 22724 states and 31610 transitions. Word has length 239 [2020-10-14 19:09:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:50,422 INFO L479 AbstractCegarLoop]: Abstraction has 22724 states and 31610 transitions. [2020-10-14 19:09:50,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:09:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 22724 states and 31610 transitions. [2020-10-14 19:09:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 19:09:50,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:50,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:50,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:09:50,500 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:50,500 INFO L82 PathProgramCache]: Analyzing trace with hash 841005638, now seen corresponding path program 1 times [2020-10-14 19:09:50,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:50,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031970031] [2020-10-14 19:09:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 19:09:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,787 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:55,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:55,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:09:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:55,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:09:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:55,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:55,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:09:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 19:09:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:09:56,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:09:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:09:56,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031970031] [2020-10-14 19:09:56,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:56,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:56,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509437866] [2020-10-14 19:09:56,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:56,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:56,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:56,349 INFO L87 Difference]: Start difference. First operand 22724 states and 31610 transitions. Second operand 7 states. [2020-10-14 19:09:56,644 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:57,441 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:00,344 INFO L93 Difference]: Finished difference Result 67265 states and 108986 transitions. [2020-10-14 19:10:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:00,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 19:10:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:00,734 INFO L225 Difference]: With dead ends: 67265 [2020-10-14 19:10:00,734 INFO L226 Difference]: Without dead ends: 44547 [2020-10-14 19:10:00,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44547 states. [2020-10-14 19:10:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44547 to 42991. [2020-10-14 19:10:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42991 states. [2020-10-14 19:10:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42991 states to 42991 states and 59377 transitions. [2020-10-14 19:10:03,574 INFO L78 Accepts]: Start accepts. Automaton has 42991 states and 59377 transitions. Word has length 263 [2020-10-14 19:10:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:03,575 INFO L479 AbstractCegarLoop]: Abstraction has 42991 states and 59377 transitions. [2020-10-14 19:10:03,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 42991 states and 59377 transitions. [2020-10-14 19:10:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 19:10:03,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:03,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:03,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:10:03,668 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:03,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1190647, now seen corresponding path program 1 times [2020-10-14 19:10:03,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:03,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588034121] [2020-10-14 19:10:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:08,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 19:10:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:08,898 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:08,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:08,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:08,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:08,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:08,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:09,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:09,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:10:09,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:10:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:09,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:10:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:10:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:09,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:09,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 19:10:09,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 19:10:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:09,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:10:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:10:09,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588034121] [2020-10-14 19:10:09,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:09,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:09,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356503869] [2020-10-14 19:10:09,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:09,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:09,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:09,327 INFO L87 Difference]: Start difference. First operand 42991 states and 59377 transitions. Second operand 7 states. [2020-10-14 19:10:09,559 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:09,984 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:12,820 INFO L93 Difference]: Finished difference Result 85512 states and 126573 transitions. [2020-10-14 19:10:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:10:12,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-14 19:10:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:13,046 INFO L225 Difference]: With dead ends: 85512 [2020-10-14 19:10:13,047 INFO L226 Difference]: Without dead ends: 42527 [2020-10-14 19:10:13,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:10:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42527 states. [2020-10-14 19:10:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42527 to 40534. [2020-10-14 19:10:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40534 states. [2020-10-14 19:10:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40534 states to 40534 states and 51333 transitions. [2020-10-14 19:10:14,692 INFO L78 Accepts]: Start accepts. Automaton has 40534 states and 51333 transitions. Word has length 266 [2020-10-14 19:10:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:14,693 INFO L479 AbstractCegarLoop]: Abstraction has 40534 states and 51333 transitions. [2020-10-14 19:10:14,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 40534 states and 51333 transitions. [2020-10-14 19:10:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 19:10:14,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:14,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:14,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:10:14,770 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1558123541, now seen corresponding path program 1 times [2020-10-14 19:10:14,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:14,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786680873] [2020-10-14 19:10:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:19,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 19:10:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:10:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:20,037 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:20,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:20,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:20,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:20,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:10:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:10:20,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:20,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:10:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 19:10:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:20,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:20,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:10:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:10:20,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786680873] [2020-10-14 19:10:20,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:20,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:20,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095992367] [2020-10-14 19:10:20,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:20,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:20,433 INFO L87 Difference]: Start difference. First operand 40534 states and 51333 transitions. Second operand 7 states. [2020-10-14 19:10:20,658 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:21,102 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:25,289 INFO L93 Difference]: Finished difference Result 88800 states and 119594 transitions. [2020-10-14 19:10:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:25,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-14 19:10:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:25,555 INFO L225 Difference]: With dead ends: 88800 [2020-10-14 19:10:25,556 INFO L226 Difference]: Without dead ends: 48272 [2020-10-14 19:10:25,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48272 states. [2020-10-14 19:10:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48272 to 46987. [2020-10-14 19:10:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46987 states. [2020-10-14 19:10:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46987 states to 46987 states and 59206 transitions. [2020-10-14 19:10:27,196 INFO L78 Accepts]: Start accepts. Automaton has 46987 states and 59206 transitions. Word has length 276 [2020-10-14 19:10:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:27,197 INFO L479 AbstractCegarLoop]: Abstraction has 46987 states and 59206 transitions. [2020-10-14 19:10:27,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 46987 states and 59206 transitions. [2020-10-14 19:10:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 19:10:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:27,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:27,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:10:27,287 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash 167174412, now seen corresponding path program 1 times [2020-10-14 19:10:27,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:27,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785959238] [2020-10-14 19:10:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 19:10:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,559 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:10:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:10:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 19:10:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:32,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:10:32,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 19:10:32,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785959238] [2020-10-14 19:10:32,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:32,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:32,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967034300] [2020-10-14 19:10:32,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:32,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:32,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:32,989 INFO L87 Difference]: Start difference. First operand 46987 states and 59206 transitions. Second operand 7 states. [2020-10-14 19:10:33,232 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:33,374 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:37,683 INFO L93 Difference]: Finished difference Result 111552 states and 146390 transitions. [2020-10-14 19:10:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:37,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-14 19:10:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:37,953 INFO L225 Difference]: With dead ends: 111552 [2020-10-14 19:10:37,954 INFO L226 Difference]: Without dead ends: 65244 [2020-10-14 19:10:38,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65244 states. [2020-10-14 19:10:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65244 to 63571. [2020-10-14 19:10:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63571 states. [2020-10-14 19:10:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63571 states to 63571 states and 77749 transitions. [2020-10-14 19:10:39,592 INFO L78 Accepts]: Start accepts. Automaton has 63571 states and 77749 transitions. Word has length 293 [2020-10-14 19:10:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:39,592 INFO L479 AbstractCegarLoop]: Abstraction has 63571 states and 77749 transitions. [2020-10-14 19:10:39,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 63571 states and 77749 transitions. [2020-10-14 19:10:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 19:10:39,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:39,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:39,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:10:39,665 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash -874138337, now seen corresponding path program 1 times [2020-10-14 19:10:39,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:39,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100048784] [2020-10-14 19:10:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:39,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:44,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:44,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-14 19:10:44,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:10:44,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:44,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 19:10:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:10:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:44,893 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:44,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:44,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:44,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:44,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:10:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:10:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 19:10:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:10:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:10:45,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100048784] [2020-10-14 19:10:45,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:45,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:45,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800626841] [2020-10-14 19:10:45,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:45,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:45,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:45,318 INFO L87 Difference]: Start difference. First operand 63571 states and 77749 transitions. Second operand 7 states. [2020-10-14 19:10:45,456 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:46,143 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:48,595 INFO L93 Difference]: Finished difference Result 123747 states and 152355 transitions. [2020-10-14 19:10:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:10:48,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 19:10:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:48,823 INFO L225 Difference]: With dead ends: 123747 [2020-10-14 19:10:48,823 INFO L226 Difference]: Without dead ends: 61379 [2020-10-14 19:10:48,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61379 states. [2020-10-14 19:10:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61379 to 60884. [2020-10-14 19:10:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60884 states. [2020-10-14 19:10:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60884 states to 60884 states and 71722 transitions. [2020-10-14 19:10:50,377 INFO L78 Accepts]: Start accepts. Automaton has 60884 states and 71722 transitions. Word has length 295 [2020-10-14 19:10:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:50,377 INFO L479 AbstractCegarLoop]: Abstraction has 60884 states and 71722 transitions. [2020-10-14 19:10:50,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 60884 states and 71722 transitions. [2020-10-14 19:10:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 19:10:50,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:50,420 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:50,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:10:50,420 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:50,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:50,421 INFO L82 PathProgramCache]: Analyzing trace with hash -667568541, now seen corresponding path program 1 times [2020-10-14 19:10:50,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:50,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331196224] [2020-10-14 19:10:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 19:10:56,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5308 [2020-10-14 19:10:56,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:10:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:56,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,288 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:10:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:10:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:56,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 19:10:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:10:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:10:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 129 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 19:10:56,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331196224] [2020-10-14 19:10:56,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:56,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:56,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518484599] [2020-10-14 19:10:56,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:56,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:56,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:56,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:56,942 INFO L87 Difference]: Start difference. First operand 60884 states and 71722 transitions. Second operand 7 states. [2020-10-14 19:10:57,184 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:58,123 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:11:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:00,766 INFO L93 Difference]: Finished difference Result 136801 states and 170967 transitions. [2020-10-14 19:11:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:11:00,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 19:11:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:00,994 INFO L225 Difference]: With dead ends: 136801 [2020-10-14 19:11:00,994 INFO L226 Difference]: Without dead ends: 77202 [2020-10-14 19:11:01,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:11:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77202 states. [2020-10-14 19:11:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77202 to 75328. [2020-10-14 19:11:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75328 states. [2020-10-14 19:11:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75328 states to 75328 states and 89493 transitions. [2020-10-14 19:11:02,653 INFO L78 Accepts]: Start accepts. Automaton has 75328 states and 89493 transitions. Word has length 296 [2020-10-14 19:11:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:02,654 INFO L479 AbstractCegarLoop]: Abstraction has 75328 states and 89493 transitions. [2020-10-14 19:11:02,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 75328 states and 89493 transitions. [2020-10-14 19:11:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 19:11:02,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:02,709 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:02,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:11:02,709 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash -986062681, now seen corresponding path program 1 times [2020-10-14 19:11:02,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:02,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136641771] [2020-10-14 19:11:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:11:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 19:11:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,643 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:11:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 19:11:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:11:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:11:05,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136641771] [2020-10-14 19:11:05,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:05,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654527002] [2020-10-14 19:11:05,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:05,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:05,171 INFO L87 Difference]: Start difference. First operand 75328 states and 89493 transitions. Second operand 7 states. [2020-10-14 19:11:05,313 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:07,827 INFO L93 Difference]: Finished difference Result 130691 states and 156390 transitions. [2020-10-14 19:11:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:07,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 19:11:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:07,982 INFO L225 Difference]: With dead ends: 130691 [2020-10-14 19:11:07,983 INFO L226 Difference]: Without dead ends: 56567 [2020-10-14 19:11:08,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56567 states. [2020-10-14 19:11:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56567 to 56505. [2020-10-14 19:11:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56505 states. [2020-10-14 19:11:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56505 states to 56505 states and 66642 transitions. [2020-10-14 19:11:08,793 INFO L78 Accepts]: Start accepts. Automaton has 56505 states and 66642 transitions. Word has length 301 [2020-10-14 19:11:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:08,794 INFO L479 AbstractCegarLoop]: Abstraction has 56505 states and 66642 transitions. [2020-10-14 19:11:08,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 56505 states and 66642 transitions. [2020-10-14 19:11:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 19:11:08,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:08,842 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:08,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:11:08,843 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:08,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1259894276, now seen corresponding path program 1 times [2020-10-14 19:11:08,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:08,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244190041] [2020-10-14 19:11:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:13,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:13,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-14 19:11:13,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:11:13,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:14,099 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:11:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:11:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:11:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 19:11:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:11:14,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 130 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 19:11:14,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244190041] [2020-10-14 19:11:14,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:14,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:14,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257757495] [2020-10-14 19:11:14,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:14,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:14,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:14,635 INFO L87 Difference]: Start difference. First operand 56505 states and 66642 transitions. Second operand 7 states. [2020-10-14 19:11:14,780 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:11:15,990 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:11:18,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:18,131 INFO L93 Difference]: Finished difference Result 132571 states and 158004 transitions. [2020-10-14 19:11:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:11:18,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-14 19:11:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:18,326 INFO L225 Difference]: With dead ends: 132571 [2020-10-14 19:11:18,326 INFO L226 Difference]: Without dead ends: 76319 [2020-10-14 19:11:18,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:11:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76319 states. [2020-10-14 19:11:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76319 to 75733. [2020-10-14 19:11:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75733 states. [2020-10-14 19:11:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75733 states to 75733 states and 87362 transitions. [2020-10-14 19:11:19,742 INFO L78 Accepts]: Start accepts. Automaton has 75733 states and 87362 transitions. Word has length 305 [2020-10-14 19:11:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:19,742 INFO L479 AbstractCegarLoop]: Abstraction has 75733 states and 87362 transitions. [2020-10-14 19:11:19,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 75733 states and 87362 transitions. [2020-10-14 19:11:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 19:11:19,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:19,788 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:19,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:11:19,788 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1353317212, now seen corresponding path program 1 times [2020-10-14 19:11:19,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:19,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515578268] [2020-10-14 19:11:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 19:11:24,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-14 19:11:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,138 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:25,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:11:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:11:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:11:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:11:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 19:11:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 76 proven. 110 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:11:25,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515578268] [2020-10-14 19:11:25,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:25,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:11:25,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376723513] [2020-10-14 19:11:25,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:11:25,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:25,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:11:25,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:25,705 INFO L87 Difference]: Start difference. First operand 75733 states and 87362 transitions. Second operand 6 states. [2020-10-14 19:11:25,968 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:29,444 INFO L93 Difference]: Finished difference Result 169253 states and 198386 transitions. [2020-10-14 19:11:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:11:29,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 324 [2020-10-14 19:11:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:29,639 INFO L225 Difference]: With dead ends: 169253 [2020-10-14 19:11:29,639 INFO L226 Difference]: Without dead ends: 93777 [2020-10-14 19:11:29,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93777 states. [2020-10-14 19:11:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93777 to 92637. [2020-10-14 19:11:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92637 states. [2020-10-14 19:11:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92637 states to 92637 states and 106843 transitions. [2020-10-14 19:11:31,086 INFO L78 Accepts]: Start accepts. Automaton has 92637 states and 106843 transitions. Word has length 324 [2020-10-14 19:11:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:31,087 INFO L479 AbstractCegarLoop]: Abstraction has 92637 states and 106843 transitions. [2020-10-14 19:11:31,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:11:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 92637 states and 106843 transitions. [2020-10-14 19:11:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 19:11:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:31,143 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:31,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:11:31,143 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 46942781, now seen corresponding path program 1 times [2020-10-14 19:11:31,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:31,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533979553] [2020-10-14 19:11:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:11:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:36,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 19:11:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,392 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:11:36,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 19:11:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:11:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:11:36,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:11:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:11:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:11:36,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 19:11:36,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:11:36,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 19:11:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:36,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 19:11:36,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:11:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-14 19:11:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:11:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 19:11:38,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533979553] [2020-10-14 19:11:38,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:38,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 19:11:38,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781989260] [2020-10-14 19:11:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:11:38,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:11:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:11:38,771 INFO L87 Difference]: Start difference. First operand 92637 states and 106843 transitions. Second operand 11 states. [2020-10-14 19:11:38,908 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:39,204 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:41,010 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-14 19:11:43,170 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:43,513 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:11:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:45,012 INFO L93 Difference]: Finished difference Result 242862 states and 291036 transitions. [2020-10-14 19:11:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 19:11:45,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 347 [2020-10-14 19:11:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:45,400 INFO L225 Difference]: With dead ends: 242862 [2020-10-14 19:11:45,400 INFO L226 Difference]: Without dead ends: 150462 [2020-10-14 19:11:45,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-10-14 19:11:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150462 states. [2020-10-14 19:11:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150462 to 143412. [2020-10-14 19:11:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143412 states. [2020-10-14 19:11:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143412 states to 143412 states and 162384 transitions. [2020-10-14 19:11:48,023 INFO L78 Accepts]: Start accepts. Automaton has 143412 states and 162384 transitions. Word has length 347 [2020-10-14 19:11:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:48,024 INFO L479 AbstractCegarLoop]: Abstraction has 143412 states and 162384 transitions. [2020-10-14 19:11:48,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:11:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 143412 states and 162384 transitions. [2020-10-14 19:11:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 19:11:48,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:48,062 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:11:48,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:11:48,063 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:48,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:48,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1723133435, now seen corresponding path program 1 times [2020-10-14 19:11:48,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:48,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284109305] [2020-10-14 19:11:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 19:11:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:53,375 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:53,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:53,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:53,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 19:11:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 19:11:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:55,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:55,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:11:55,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 175 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:11:56,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284109305] [2020-10-14 19:11:56,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:56,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:56,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794343233] [2020-10-14 19:11:56,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:56,024 INFO L87 Difference]: Start difference. First operand 143412 states and 162384 transitions. Second operand 7 states. [2020-10-14 19:11:56,169 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:11:57,647 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:12:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:00,195 INFO L93 Difference]: Finished difference Result 337588 states and 383378 transitions. [2020-10-14 19:12:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:12:00,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-14 19:12:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:00,654 INFO L225 Difference]: With dead ends: 337588 [2020-10-14 19:12:00,654 INFO L226 Difference]: Without dead ends: 194419 [2020-10-14 19:12:01,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:12:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194419 states. [2020-10-14 19:12:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194419 to 191042. [2020-10-14 19:12:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191042 states. [2020-10-14 19:12:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191042 states to 191042 states and 216077 transitions. [2020-10-14 19:12:03,903 INFO L78 Accepts]: Start accepts. Automaton has 191042 states and 216077 transitions. Word has length 350 [2020-10-14 19:12:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:03,904 INFO L479 AbstractCegarLoop]: Abstraction has 191042 states and 216077 transitions. [2020-10-14 19:12:03,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:12:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 191042 states and 216077 transitions. [2020-10-14 19:12:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 19:12:03,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:03,953 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:03,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 19:12:03,953 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1790007654, now seen corresponding path program 1 times [2020-10-14 19:12:03,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:03,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952369158] [2020-10-14 19:12:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking...