/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:53:57,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:53:57,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:53:57,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:53:57,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:53:57,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:53:57,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:53:57,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:53:57,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:53:57,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:53:57,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:53:57,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:53:57,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:53:57,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:53:57,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:53:57,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:53:57,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:53:57,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:53:57,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:53:57,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:53:57,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:53:57,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:53:57,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:53:57,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:53:57,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:53:57,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:53:57,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:53:57,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:53:57,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:53:57,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:53:57,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:53:57,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:53:57,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:53:57,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:53:57,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:53:57,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:53:57,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:53:57,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:53:57,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:53:57,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:53:57,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:53:57,660 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 00:53:57,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:53:57,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:53:57,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:53:57,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:53:57,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:53:57,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:53:57,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:53:57,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:53:57,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:53:57,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:53:57,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:53:57,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:53:57,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:53:57,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:53:57,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:53:57,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:53:57,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:53:57,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:53:57,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:53:57,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:53:57,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:53:57,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:53:57,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:53:57,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:53:57,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:53:57,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:53:57,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:53:57,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:53:57,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:53:57,689 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:53:57,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:53:57,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:53:57,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:53:57,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:53:57,993 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:53:57,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-14 00:53:58,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f18a250/3c6b65ec4cc14e8abb78520d80410186/FLAGa1a5f6cc5 [2020-10-14 00:53:58,718 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:53:58,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-14 00:53:58,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f18a250/3c6b65ec4cc14e8abb78520d80410186/FLAGa1a5f6cc5 [2020-10-14 00:53:58,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f18a250/3c6b65ec4cc14e8abb78520d80410186 [2020-10-14 00:53:58,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:53:58,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:53:58,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:53:58,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:53:58,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:53:58,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:58" (1/1) ... [2020-10-14 00:53:58,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566ddefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:58, skipping insertion in model container [2020-10-14 00:53:58,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:58" (1/1) ... [2020-10-14 00:53:58,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:53:58,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:53:59,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:53:59,909 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:54:00,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:54:00,221 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:54:00,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00 WrapperNode [2020-10-14 00:54:00,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:54:00,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:54:00,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:54:00,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:54:00,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (1/1) ... [2020-10-14 00:54:00,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:54:00,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:54:00,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:54:00,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:54:00,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (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 00:54:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:54:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:54:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:54:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:54:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:54:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:54:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:54:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:54:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:54:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:54:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:54:02,588 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:54:02,589 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:54:02,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:54:02 BoogieIcfgContainer [2020-10-14 00:54:02,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:54:02,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:54:02,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:54:02,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:54:02,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:53:58" (1/3) ... [2020-10-14 00:54:02,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2797eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:54:02, skipping insertion in model container [2020-10-14 00:54:02,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:54:00" (2/3) ... [2020-10-14 00:54:02,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2797eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:54:02, skipping insertion in model container [2020-10-14 00:54:02,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:54:02" (3/3) ... [2020-10-14 00:54:02,616 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2020-10-14 00:54:02,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:54:02,658 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:54:02,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:54:02,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:54:02,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:54:02,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:54:02,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:54:02,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:54:02,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:54:02,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:54:02,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:54:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:54:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 00:54:02,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:02,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:02,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:02,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1663544320, now seen corresponding path program 1 times [2020-10-14 00:54:02,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:02,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646229804] [2020-10-14 00:54:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:03,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 00:54:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-14 00:54:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:06,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:54:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:06,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 00:54:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:54:07,066 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:07,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:54:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:07,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:07,186 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 00:54:07,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646229804] [2020-10-14 00:54:07,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:54:07,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:54:07,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7906701] [2020-10-14 00:54:07,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:07,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:07,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:07,215 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 00:54:07,424 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:10,256 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 00:54:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:10,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-14 00:54:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:10,280 INFO L225 Difference]: With dead ends: 884 [2020-10-14 00:54:10,281 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 00:54:10,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 00:54:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 00:54:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:54:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 00:54:10,393 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 183 [2020-10-14 00:54:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:10,394 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 00:54:10,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 00:54:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 00:54:10,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:10,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:10,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:54:10,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash -678178813, now seen corresponding path program 1 times [2020-10-14 00:54:10,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:10,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232291090] [2020-10-14 00:54:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 00:54:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-14 00:54:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:12,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:54:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 00:54:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:13,102 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:13,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:13,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:54:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:13,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:54:13,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:54:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:54:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:13,311 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 00:54:13,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232291090] [2020-10-14 00:54:13,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:13,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:13,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223738705] [2020-10-14 00:54:13,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:13,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:13,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:13,316 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 5 states. [2020-10-14 00:54:13,570 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:16,321 INFO L93 Difference]: Finished difference Result 1394 states and 2170 transitions. [2020-10-14 00:54:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 00:54:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:16,332 INFO L225 Difference]: With dead ends: 1394 [2020-10-14 00:54:16,332 INFO L226 Difference]: Without dead ends: 925 [2020-10-14 00:54:16,334 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 00:54:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-14 00:54:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 903. [2020-10-14 00:54:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-14 00:54:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1371 transitions. [2020-10-14 00:54:16,404 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1371 transitions. Word has length 192 [2020-10-14 00:54:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:16,405 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1371 transitions. [2020-10-14 00:54:16,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1371 transitions. [2020-10-14 00:54:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 00:54:16,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:16,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:16,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:54:16,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2080880364, now seen corresponding path program 1 times [2020-10-14 00:54:16,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:16,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960826177] [2020-10-14 00:54:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 00:54:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3906 [2020-10-14 00:54:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:54:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 00:54:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:20,669 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:20,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:54:20,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:54:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:20,995 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 00:54:20,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960826177] [2020-10-14 00:54:20,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:20,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:54:20,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065884808] [2020-10-14 00:54:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:54:20,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:21,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:54:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:21,000 INFO L87 Difference]: Start difference. First operand 903 states and 1371 transitions. Second operand 6 states. [2020-10-14 00:54:21,220 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:21,350 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:24,951 INFO L93 Difference]: Finished difference Result 3479 states and 5440 transitions. [2020-10-14 00:54:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:54:24,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2020-10-14 00:54:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:24,977 INFO L225 Difference]: With dead ends: 3479 [2020-10-14 00:54:24,978 INFO L226 Difference]: Without dead ends: 2582 [2020-10-14 00:54:24,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:54:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-10-14 00:54:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2575. [2020-10-14 00:54:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-14 00:54:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3661 transitions. [2020-10-14 00:54:25,080 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3661 transitions. Word has length 195 [2020-10-14 00:54:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:25,080 INFO L479 AbstractCegarLoop]: Abstraction has 2575 states and 3661 transitions. [2020-10-14 00:54:25,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:54:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3661 transitions. [2020-10-14 00:54:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 00:54:25,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:25,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:25,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:54:25,091 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 677946411, now seen corresponding path program 1 times [2020-10-14 00:54:25,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:25,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074237517] [2020-10-14 00:54:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:28,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 00:54:28,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3121 [2020-10-14 00:54:28,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:28,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 00:54:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 00:54:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:28,525 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:54:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:28,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:54:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:28,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:28,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 00:54:28,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 00:54:28,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:28,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:28,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:28,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:54:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:54:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:28,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074237517] [2020-10-14 00:54:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:28,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:28,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939271758] [2020-10-14 00:54:28,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:28,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:28,927 INFO L87 Difference]: Start difference. First operand 2575 states and 3661 transitions. Second operand 5 states. [2020-10-14 00:54:29,217 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:31,864 INFO L93 Difference]: Finished difference Result 7668 states and 11205 transitions. [2020-10-14 00:54:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:31,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-14 00:54:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:31,899 INFO L225 Difference]: With dead ends: 7668 [2020-10-14 00:54:31,900 INFO L226 Difference]: Without dead ends: 5099 [2020-10-14 00:54:31,907 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 00:54:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2020-10-14 00:54:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5088. [2020-10-14 00:54:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5088 states. [2020-10-14 00:54:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7225 transitions. [2020-10-14 00:54:32,103 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7225 transitions. Word has length 219 [2020-10-14 00:54:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:32,103 INFO L479 AbstractCegarLoop]: Abstraction has 5088 states and 7225 transitions. [2020-10-14 00:54:32,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7225 transitions. [2020-10-14 00:54:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 00:54:32,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:32,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:32,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:54:32,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1394078173, now seen corresponding path program 1 times [2020-10-14 00:54:32,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:32,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103223034] [2020-10-14 00:54:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 00:54:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-14 00:54:36,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 00:54:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 00:54:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:36,292 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:54:36,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:54:36,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 00:54:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:54:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:36,663 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 00:54:36,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103223034] [2020-10-14 00:54:36,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:36,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:36,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383388190] [2020-10-14 00:54:36,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:36,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:36,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:36,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:36,667 INFO L87 Difference]: Start difference. First operand 5088 states and 7225 transitions. Second operand 5 states. [2020-10-14 00:54:36,899 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:39,723 INFO L93 Difference]: Finished difference Result 14795 states and 21671 transitions. [2020-10-14 00:54:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:39,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-14 00:54:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:39,777 INFO L225 Difference]: With dead ends: 14795 [2020-10-14 00:54:39,777 INFO L226 Difference]: Without dead ends: 9713 [2020-10-14 00:54:39,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 00:54:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2020-10-14 00:54:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 9689. [2020-10-14 00:54:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9689 states. [2020-10-14 00:54:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9689 states to 9689 states and 14118 transitions. [2020-10-14 00:54:40,133 INFO L78 Accepts]: Start accepts. Automaton has 9689 states and 14118 transitions. Word has length 246 [2020-10-14 00:54:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:40,134 INFO L479 AbstractCegarLoop]: Abstraction has 9689 states and 14118 transitions. [2020-10-14 00:54:40,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9689 states and 14118 transitions. [2020-10-14 00:54:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 00:54:40,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:40,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:40,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:54:40,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:40,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1015169138, now seen corresponding path program 1 times [2020-10-14 00:54:40,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:40,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895426292] [2020-10-14 00:54:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:45,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 00:54:45,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:54:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 00:54:45,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:45,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 00:54:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:54:45,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:45,453 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:45,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:45,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:45,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:45,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:45,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:54:45,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:45,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:54:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:45,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:45,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:45,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:54:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:45,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:54:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 00:54:45,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:45,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:54:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:54:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:45,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:54:45,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:54:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 00:54:45,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895426292] [2020-10-14 00:54:45,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:45,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:45,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342715734] [2020-10-14 00:54:45,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:45,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:45,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:45,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:45,893 INFO L87 Difference]: Start difference. First operand 9689 states and 14118 transitions. Second operand 7 states. [2020-10-14 00:54:46,130 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:46,534 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:51,161 INFO L93 Difference]: Finished difference Result 38862 states and 64032 transitions. [2020-10-14 00:54:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:54:51,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-14 00:54:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:51,510 INFO L225 Difference]: With dead ends: 38862 [2020-10-14 00:54:51,510 INFO L226 Difference]: Without dead ends: 29179 [2020-10-14 00:54:51,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:54:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29179 states. [2020-10-14 00:54:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29179 to 29171. [2020-10-14 00:54:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29171 states. [2020-10-14 00:54:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29171 states to 29171 states and 47298 transitions. [2020-10-14 00:54:52,683 INFO L78 Accepts]: Start accepts. Automaton has 29171 states and 47298 transitions. Word has length 262 [2020-10-14 00:54:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:52,684 INFO L479 AbstractCegarLoop]: Abstraction has 29171 states and 47298 transitions. [2020-10-14 00:54:52,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 29171 states and 47298 transitions. [2020-10-14 00:54:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 00:54:52,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:52,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:52,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:54:52,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1144836721, now seen corresponding path program 1 times [2020-10-14 00:54:52,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:52,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390613718] [2020-10-14 00:54:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:57,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:57,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 00:54:57,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:54:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:54:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,106 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:54:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:54:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:54:58,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:54:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:54:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:54:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:54:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:58,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:58,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:54:58,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 118 proven. 26 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 00:54:58,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390613718] [2020-10-14 00:54:58,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:58,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:58,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193002617] [2020-10-14 00:54:58,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:58,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:58,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:58,441 INFO L87 Difference]: Start difference. First operand 29171 states and 47298 transitions. Second operand 7 states. [2020-10-14 00:54:58,579 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:01,720 INFO L93 Difference]: Finished difference Result 70331 states and 121903 transitions. [2020-10-14 00:55:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:01,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-14 00:55:01,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:02,031 INFO L225 Difference]: With dead ends: 70331 [2020-10-14 00:55:02,031 INFO L226 Difference]: Without dead ends: 41166 [2020-10-14 00:55:02,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 00:55:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41166 states. [2020-10-14 00:55:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41166 to 40714. [2020-10-14 00:55:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40714 states. [2020-10-14 00:55:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 66658 transitions. [2020-10-14 00:55:04,054 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 66658 transitions. Word has length 277 [2020-10-14 00:55:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:04,055 INFO L479 AbstractCegarLoop]: Abstraction has 40714 states and 66658 transitions. [2020-10-14 00:55:04,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 66658 transitions. [2020-10-14 00:55:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 00:55:04,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:04,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:04,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:55:04,279 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1939092556, now seen corresponding path program 1 times [2020-10-14 00:55:04,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:04,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472616446] [2020-10-14 00:55:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:08,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:08,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 00:55:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-10-14 00:55:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:08,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 00:55:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:55:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:08,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:08,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:08,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:55:08,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:08,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:08,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:55:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:55:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 00:55:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:08,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:55:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:55:08,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472616446] [2020-10-14 00:55:08,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:08,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:08,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889211862] [2020-10-14 00:55:08,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:08,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:08,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:08,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:08,973 INFO L87 Difference]: Start difference. First operand 40714 states and 66658 transitions. Second operand 7 states. [2020-10-14 00:55:09,252 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:10,577 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:55:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:13,433 INFO L93 Difference]: Finished difference Result 89100 states and 169760 transitions. [2020-10-14 00:55:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:13,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 00:55:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:13,975 INFO L225 Difference]: With dead ends: 89100 [2020-10-14 00:55:13,975 INFO L226 Difference]: Without dead ends: 48392 [2020-10-14 00:55:14,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:55:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48392 states. [2020-10-14 00:55:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48392 to 46428. [2020-10-14 00:55:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46428 states. [2020-10-14 00:55:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46428 states to 46428 states and 75205 transitions. [2020-10-14 00:55:17,789 INFO L78 Accepts]: Start accepts. Automaton has 46428 states and 75205 transitions. Word has length 284 [2020-10-14 00:55:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:17,790 INFO L479 AbstractCegarLoop]: Abstraction has 46428 states and 75205 transitions. [2020-10-14 00:55:17,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 46428 states and 75205 transitions. [2020-10-14 00:55:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 00:55:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:18,012 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:55:18,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:55:18,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -410533846, now seen corresponding path program 1 times [2020-10-14 00:55:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:18,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460950652] [2020-10-14 00:55:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:18,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-14 00:55:18,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-14 00:55:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:18,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:55:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:55:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 00:55:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:19,042 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:55:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:19,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:55:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:55:19,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460950652] [2020-10-14 00:55:19,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:55:19,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:55:19,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732230545] [2020-10-14 00:55:19,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:19,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:19,720 INFO L87 Difference]: Start difference. First operand 46428 states and 75205 transitions. Second operand 7 states. [2020-10-14 00:55:19,850 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:21,821 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:23,091 INFO L93 Difference]: Finished difference Result 94097 states and 158407 transitions. [2020-10-14 00:55:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:23,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 00:55:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:23,396 INFO L225 Difference]: With dead ends: 94097 [2020-10-14 00:55:23,396 INFO L226 Difference]: Without dead ends: 47675 [2020-10-14 00:55:23,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2020-10-14 00:55:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 46892. [2020-10-14 00:55:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46892 states. [2020-10-14 00:55:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46892 states to 46892 states and 74780 transitions. [2020-10-14 00:55:25,570 INFO L78 Accepts]: Start accepts. Automaton has 46892 states and 74780 transitions. Word has length 295 [2020-10-14 00:55:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:25,570 INFO L479 AbstractCegarLoop]: Abstraction has 46892 states and 74780 transitions. [2020-10-14 00:55:25,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 46892 states and 74780 transitions. [2020-10-14 00:55:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 00:55:25,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:25,757 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:25,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:55:25,758 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:25,759 INFO L82 PathProgramCache]: Analyzing trace with hash -136116783, now seen corresponding path program 1 times [2020-10-14 00:55:25,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:25,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260906537] [2020-10-14 00:55:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 00:55:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-14 00:55:28,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:55:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:55:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:55:28,463 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:55:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:55:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:55:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:28,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:28,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:55:28,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 00:55:28,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:28,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:28,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:55:28,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:55:28,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260906537] [2020-10-14 00:55:28,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:28,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:28,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043345683] [2020-10-14 00:55:28,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:28,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:28,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:28,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:28,904 INFO L87 Difference]: Start difference. First operand 46892 states and 74780 transitions. Second operand 7 states. [2020-10-14 00:55:29,027 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:29,537 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:32,676 INFO L93 Difference]: Finished difference Result 119927 states and 194636 transitions. [2020-10-14 00:55:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:55:32,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-14 00:55:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:32,967 INFO L225 Difference]: With dead ends: 119927 [2020-10-14 00:55:32,967 INFO L226 Difference]: Without dead ends: 73041 [2020-10-14 00:55:33,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73041 states. [2020-10-14 00:55:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73041 to 72597. [2020-10-14 00:55:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72597 states. [2020-10-14 00:55:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72597 states to 72597 states and 107214 transitions. [2020-10-14 00:55:34,689 INFO L78 Accepts]: Start accepts. Automaton has 72597 states and 107214 transitions. Word has length 306 [2020-10-14 00:55:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:34,689 INFO L479 AbstractCegarLoop]: Abstraction has 72597 states and 107214 transitions. [2020-10-14 00:55:34,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72597 states and 107214 transitions. [2020-10-14 00:55:34,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 00:55:34,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:34,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:34,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:55:34,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:34,902 INFO L82 PathProgramCache]: Analyzing trace with hash -583645676, now seen corresponding path program 1 times [2020-10-14 00:55:34,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:34,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334306029] [2020-10-14 00:55:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 00:55:39,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 00:55:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,100 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:55:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:55:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:55:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:40,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:40,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:55:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 00:55:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:40,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:40,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:40,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 137 proven. 57 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 00:55:40,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334306029] [2020-10-14 00:55:40,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:40,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:40,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646580762] [2020-10-14 00:55:40,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:40,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:40,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:40,621 INFO L87 Difference]: Start difference. First operand 72597 states and 107214 transitions. Second operand 7 states. [2020-10-14 00:55:40,762 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:41,269 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:44,476 INFO L93 Difference]: Finished difference Result 145578 states and 218776 transitions. [2020-10-14 00:55:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:44,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-14 00:55:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:44,704 INFO L225 Difference]: With dead ends: 145578 [2020-10-14 00:55:44,704 INFO L226 Difference]: Without dead ends: 72991 [2020-10-14 00:55:44,844 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 00:55:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72991 states. [2020-10-14 00:55:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72991 to 72689. [2020-10-14 00:55:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72689 states. [2020-10-14 00:55:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72689 states to 72689 states and 96607 transitions. [2020-10-14 00:55:46,775 INFO L78 Accepts]: Start accepts. Automaton has 72689 states and 96607 transitions. Word has length 324 [2020-10-14 00:55:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:46,775 INFO L479 AbstractCegarLoop]: Abstraction has 72689 states and 96607 transitions. [2020-10-14 00:55:46,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 72689 states and 96607 transitions. [2020-10-14 00:55:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-14 00:55:46,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:46,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:55:46,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:55:46,923 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash 156937186, now seen corresponding path program 1 times [2020-10-14 00:55:46,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:46,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613983813] [2020-10-14 00:55:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:46,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:55:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:55:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,148 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:55:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:55:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:55:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:55:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:55:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:52,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:55:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:52,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:55:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 161 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 00:55:52,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613983813] [2020-10-14 00:55:52,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:52,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:52,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400586367] [2020-10-14 00:55:52,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:52,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:52,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:52,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:52,580 INFO L87 Difference]: Start difference. First operand 72689 states and 96607 transitions. Second operand 7 states. [2020-10-14 00:55:52,724 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:57,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:57,239 INFO L93 Difference]: Finished difference Result 209345 states and 278729 transitions. [2020-10-14 00:55:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:55:57,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-14 00:55:57,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:57,645 INFO L225 Difference]: With dead ends: 209345 [2020-10-14 00:55:57,645 INFO L226 Difference]: Without dead ends: 136666 [2020-10-14 00:55:57,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 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 00:55:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136666 states. [2020-10-14 00:56:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136666 to 136593. [2020-10-14 00:56:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136593 states. [2020-10-14 00:56:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136593 states to 136593 states and 181822 transitions. [2020-10-14 00:56:02,791 INFO L78 Accepts]: Start accepts. Automaton has 136593 states and 181822 transitions. Word has length 331 [2020-10-14 00:56:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:02,792 INFO L479 AbstractCegarLoop]: Abstraction has 136593 states and 181822 transitions. [2020-10-14 00:56:02,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 136593 states and 181822 transitions. [2020-10-14 00:56:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 00:56:03,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:03,084 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 00:56:03,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:56:03,085 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:03,085 INFO L82 PathProgramCache]: Analyzing trace with hash 555669409, now seen corresponding path program 1 times [2020-10-14 00:56:03,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:03,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20705967] [2020-10-14 00:56:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 00:56:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,302 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:56:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:56:08,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:56:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:56:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:56:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:56:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:56:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-14 00:56:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:56:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-14 00:56:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:08,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:08,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:08,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:56:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 221 proven. 59 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-14 00:56:08,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20705967] [2020-10-14 00:56:08,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:08,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:08,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630476354] [2020-10-14 00:56:08,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:08,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:08,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:08,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:08,745 INFO L87 Difference]: Start difference. First operand 136593 states and 181822 transitions. Second operand 7 states. [2020-10-14 00:56:10,607 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:13,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:13,506 INFO L93 Difference]: Finished difference Result 244433 states and 326331 transitions. [2020-10-14 00:56:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:56:13,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-14 00:56:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:13,817 INFO L225 Difference]: With dead ends: 244433 [2020-10-14 00:56:13,817 INFO L226 Difference]: Without dead ends: 107850 [2020-10-14 00:56:14,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:56:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107850 states. [2020-10-14 00:56:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107850 to 107846. [2020-10-14 00:56:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107846 states. [2020-10-14 00:56:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107846 states to 107846 states and 140408 transitions. [2020-10-14 00:56:16,287 INFO L78 Accepts]: Start accepts. Automaton has 107846 states and 140408 transitions. Word has length 362 [2020-10-14 00:56:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:16,287 INFO L479 AbstractCegarLoop]: Abstraction has 107846 states and 140408 transitions. [2020-10-14 00:56:16,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 107846 states and 140408 transitions. [2020-10-14 00:56:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-14 00:56:16,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:16,437 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:16,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:56:16,438 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:16,438 INFO L82 PathProgramCache]: Analyzing trace with hash -305670911, now seen corresponding path program 1 times [2020-10-14 00:56:16,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:16,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001188441] [2020-10-14 00:56:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-14 00:56:18,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:56:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,357 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:56:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:56:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:20,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 00:56:20,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:56:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:56:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 191 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:56:21,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001188441] [2020-10-14 00:56:21,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:21,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:21,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023174777] [2020-10-14 00:56:21,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:21,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:21,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:21,085 INFO L87 Difference]: Start difference. First operand 107846 states and 140408 transitions. Second operand 7 states. [2020-10-14 00:56:21,423 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:22,511 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:56:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:26,689 INFO L93 Difference]: Finished difference Result 232446 states and 324344 transitions. [2020-10-14 00:56:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:26,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-14 00:56:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:27,231 INFO L225 Difference]: With dead ends: 232446 [2020-10-14 00:56:27,232 INFO L226 Difference]: Without dead ends: 124610 [2020-10-14 00:56:27,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:56:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124610 states. [2020-10-14 00:56:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124610 to 116544. [2020-10-14 00:56:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116544 states. [2020-10-14 00:56:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116544 states to 116544 states and 144517 transitions. [2020-10-14 00:56:30,483 INFO L78 Accepts]: Start accepts. Automaton has 116544 states and 144517 transitions. Word has length 361 [2020-10-14 00:56:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:30,484 INFO L479 AbstractCegarLoop]: Abstraction has 116544 states and 144517 transitions. [2020-10-14 00:56:30,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 116544 states and 144517 transitions. [2020-10-14 00:56:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 00:56:30,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:30,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:30,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:56:30,705 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1189934009, now seen corresponding path program 1 times [2020-10-14 00:56:30,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:30,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716557102] [2020-10-14 00:56:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:31,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 00:56:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:31,888 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:31,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:31,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:56:31,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:31,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:56:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:56:32,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:56:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:56:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 00:56:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:56:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:56:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 180 proven. 54 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-14 00:56:32,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716557102] [2020-10-14 00:56:32,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:32,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:32,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554354140] [2020-10-14 00:56:32,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:32,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:32,360 INFO L87 Difference]: Start difference. First operand 116544 states and 144517 transitions. Second operand 7 states. [2020-10-14 00:56:32,498 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:33,929 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:56:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:38,468 INFO L93 Difference]: Finished difference Result 274890 states and 345737 transitions. [2020-10-14 00:56:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:38,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-14 00:56:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:38,948 INFO L225 Difference]: With dead ends: 274890 [2020-10-14 00:56:38,948 INFO L226 Difference]: Without dead ends: 158364 [2020-10-14 00:56:39,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 00:56:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158364 states. [2020-10-14 00:56:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158364 to 152774. [2020-10-14 00:56:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152774 states. [2020-10-14 00:56:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152774 states to 152774 states and 188725 transitions. [2020-10-14 00:56:42,152 INFO L78 Accepts]: Start accepts. Automaton has 152774 states and 188725 transitions. Word has length 372 [2020-10-14 00:56:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:42,153 INFO L479 AbstractCegarLoop]: Abstraction has 152774 states and 188725 transitions. [2020-10-14 00:56:42,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 152774 states and 188725 transitions. [2020-10-14 00:56:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-14 00:56:42,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:42,350 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:56:42,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:56:42,350 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:42,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1897938523, now seen corresponding path program 1 times [2020-10-14 00:56:42,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:42,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733859379] [2020-10-14 00:56:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:47,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 00:56:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:56:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:47,577 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,805 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:56:49,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:56:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:56:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:56:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:56:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:56:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:56:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:50,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:50,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 226 proven. 44 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 00:56:50,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733859379] [2020-10-14 00:56:50,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:50,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:56:50,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211317614] [2020-10-14 00:56:50,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:56:50,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:50,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:56:50,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:56:50,208 INFO L87 Difference]: Start difference. First operand 152774 states and 188725 transitions. Second operand 8 states. [2020-10-14 00:56:50,347 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:56:51,182 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:52,461 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:56:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:56,134 INFO L93 Difference]: Finished difference Result 318210 states and 392704 transitions. [2020-10-14 00:56:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:56:56,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-14 00:56:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:56,696 INFO L225 Difference]: With dead ends: 318210 [2020-10-14 00:56:56,696 INFO L226 Difference]: Without dead ends: 165474 [2020-10-14 00:56:56,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:56:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165474 states. [2020-10-14 00:56:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165474 to 161441. [2020-10-14 00:56:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161441 states. [2020-10-14 00:57:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161441 states to 161441 states and 195897 transitions. [2020-10-14 00:57:00,126 INFO L78 Accepts]: Start accepts. Automaton has 161441 states and 195897 transitions. Word has length 377 [2020-10-14 00:57:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:00,127 INFO L479 AbstractCegarLoop]: Abstraction has 161441 states and 195897 transitions. [2020-10-14 00:57:00,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:57:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 161441 states and 195897 transitions. [2020-10-14 00:57:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-14 00:57:00,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:00,349 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:00,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:57:00,349 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash -447869582, now seen corresponding path program 1 times [2020-10-14 00:57:00,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:00,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854250244] [2020-10-14 00:57:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-14 00:57:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:57:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 00:57:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:05,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:57:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:57:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 00:57:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:05,655 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:05,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:05,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:57:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:57:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:57:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:57:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:57:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:05,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:57:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:57:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:57:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:06,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:06,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:57:06,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:57:06,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:06,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 00:57:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 241 proven. 75 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 00:57:06,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854250244] [2020-10-14 00:57:06,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:06,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:57:06,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96127661] [2020-10-14 00:57:06,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:57:06,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:06,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:57:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:57:06,345 INFO L87 Difference]: Start difference. First operand 161441 states and 195897 transitions. Second operand 10 states. [2020-10-14 00:57:06,489 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:06,871 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-14 00:57:07,559 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:57:08,720 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2020-10-14 00:57:10,455 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:16,387 INFO L93 Difference]: Finished difference Result 329917 states and 424037 transitions. [2020-10-14 00:57:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:57:16,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 383 [2020-10-14 00:57:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:17,050 INFO L225 Difference]: With dead ends: 329917 [2020-10-14 00:57:17,050 INFO L226 Difference]: Without dead ends: 168510 [2020-10-14 00:57:17,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:57:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168510 states. [2020-10-14 00:57:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168510 to 161285. [2020-10-14 00:57:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161285 states.