/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:13:18,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:13:18,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:13:18,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:13:18,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:13:18,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:13:18,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:13:18,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:13:18,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:13:18,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:13:18,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:13:18,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:13:18,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:13:18,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:13:18,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:13:18,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:13:18,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:13:18,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:13:18,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:13:18,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:13:18,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:13:18,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:13:18,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:13:18,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:13:18,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:13:18,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:13:18,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:13:18,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:13:18,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:13:18,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:13:18,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:13:18,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:13:18,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:13:18,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:13:18,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:13:18,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:13:18,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:13:18,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:13:18,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:13:18,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:13:18,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:13:18,675 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 22:13:18,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:13:18,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:13:18,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:13:18,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:13:18,721 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:13:18,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:13:18,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:13:18,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:13:18,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:13:18,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:13:18,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:13:18,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:13:18,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:13:18,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:13:18,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:13:18,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:13:18,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:13:18,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:13:18,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:13:18,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:13:18,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:13:18,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:13:18,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:13:18,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:13:18,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:13:19,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:13:19,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:13:19,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:13:19,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:13:19,077 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:13:19,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24.c [2020-10-14 22:13:19,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70257ec0f/67b233703aad475693a5441b61c0e987/FLAG113e822b1 [2020-10-14 22:13:19,804 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:13:19,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label24.c [2020-10-14 22:13:19,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70257ec0f/67b233703aad475693a5441b61c0e987/FLAG113e822b1 [2020-10-14 22:13:19,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70257ec0f/67b233703aad475693a5441b61c0e987 [2020-10-14 22:13:19,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:13:19,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:13:19,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:13:19,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:13:19,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:13:19,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:13:19" (1/1) ... [2020-10-14 22:13:19,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76096117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:19, skipping insertion in model container [2020-10-14 22:13:19,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:13:19" (1/1) ... [2020-10-14 22:13:19,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:13:20,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:13:21,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:13:21,037 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:13:21,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:13:21,381 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:13:21,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21 WrapperNode [2020-10-14 22:13:21,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:13:21,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:13:21,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:13:21,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:13:21,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (1/1) ... [2020-10-14 22:13:21,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:13:21,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:13:21,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:13:21,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:13:21,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (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 22:13:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:13:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:13:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:13:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:13:21,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:13:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:13:21,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:13:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:13:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:13:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:13:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:13:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:13:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:13:24,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:13:24,245 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:13:24,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:13:24 BoogieIcfgContainer [2020-10-14 22:13:24,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:13:24,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:13:24,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:13:24,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:13:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:13:19" (1/3) ... [2020-10-14 22:13:24,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575f4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:13:24, skipping insertion in model container [2020-10-14 22:13:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:13:21" (2/3) ... [2020-10-14 22:13:24,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575f4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:13:24, skipping insertion in model container [2020-10-14 22:13:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:13:24" (3/3) ... [2020-10-14 22:13:24,261 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label24.c [2020-10-14 22:13:24,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:13:24,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:13:24,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:13:24,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:13:24,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:13:24,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:13:24,325 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:13:24,326 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:13:24,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:13:24,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:13:24,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:13:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:13:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 22:13:24,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:24,366 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] [2020-10-14 22:13:24,366 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash 272014893, now seen corresponding path program 1 times [2020-10-14 22:13:24,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:24,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113463109] [2020-10-14 22:13:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:24,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:25,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:25,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 22:13:25,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 22:13:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:25,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:13:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:13:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 22:13:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:13:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:25,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:13:25,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:13:25,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:13:25,210 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 22:13:25,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113463109] [2020-10-14 22:13:25,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:13:25,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:13:25,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901026495] [2020-10-14 22:13:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:13:25,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:13:25,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:13:25,241 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-14 22:13:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:30,406 INFO L93 Difference]: Finished difference Result 1515 states and 2848 transitions. [2020-10-14 22:13:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:13:30,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 22:13:30,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:30,442 INFO L225 Difference]: With dead ends: 1515 [2020-10-14 22:13:30,443 INFO L226 Difference]: Without dead ends: 1038 [2020-10-14 22:13:30,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-14 22:13:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2020-10-14 22:13:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-14 22:13:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions. [2020-10-14 22:13:30,577 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 58 [2020-10-14 22:13:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:30,578 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions. [2020-10-14 22:13:30,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:13:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions. [2020-10-14 22:13:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 22:13:30,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:30,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:13:30,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:13:30,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:30,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:30,605 INFO L82 PathProgramCache]: Analyzing trace with hash 190582509, now seen corresponding path program 1 times [2020-10-14 22:13:30,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:30,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52012868] [2020-10-14 22:13:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:35,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:35,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 22:13:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:13:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:13:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:35,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:13:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:13:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:13:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:35,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:13:35,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:35,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:13:35,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:36,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:36,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:13:36,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:13:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:13:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:36,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:13:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 22:13:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:36,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:13:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 22:13:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 22:13:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:13:36,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52012868] [2020-10-14 22:13:36,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:36,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:36,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920637903] [2020-10-14 22:13:36,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:36,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:36,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:36,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:36,372 INFO L87 Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand 7 states. [2020-10-14 22:13:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:40,306 INFO L93 Difference]: Finished difference Result 2769 states and 4527 transitions. [2020-10-14 22:13:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:13:40,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 22:13:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:40,323 INFO L225 Difference]: With dead ends: 2769 [2020-10-14 22:13:40,323 INFO L226 Difference]: Without dead ends: 1744 [2020-10-14 22:13:40,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:13:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-14 22:13:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1727. [2020-10-14 22:13:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-10-14 22:13:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2598 transitions. [2020-10-14 22:13:40,436 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2598 transitions. Word has length 240 [2020-10-14 22:13:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:40,442 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2598 transitions. [2020-10-14 22:13:40,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2598 transitions. [2020-10-14 22:13:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 22:13:40,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:40,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:13:40,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:13:40,462 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash -868212803, now seen corresponding path program 1 times [2020-10-14 22:13:40,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:40,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455076760] [2020-10-14 22:13:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:45,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:45,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 22:13:45,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:13:45,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4699 [2020-10-14 22:13:45,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:45,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 22:13:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:13:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:13:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:13:45,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:45,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:45,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:13:45,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:45,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:45,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:13:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:13:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:45,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:45,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:13:45,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:45,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:13:45,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:45,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 22:13:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:13:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:13:45,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455076760] [2020-10-14 22:13:45,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:45,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:45,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228698728] [2020-10-14 22:13:45,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:45,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:45,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:45,783 INFO L87 Difference]: Start difference. First operand 1727 states and 2598 transitions. Second operand 7 states. [2020-10-14 22:13:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:49,946 INFO L93 Difference]: Finished difference Result 4187 states and 6332 transitions. [2020-10-14 22:13:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:13:49,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 22:13:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:49,972 INFO L225 Difference]: With dead ends: 4187 [2020-10-14 22:13:49,972 INFO L226 Difference]: Without dead ends: 2109 [2020-10-14 22:13:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:13:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-10-14 22:13:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2077. [2020-10-14 22:13:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2020-10-14 22:13:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2402 transitions. [2020-10-14 22:13:50,051 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2402 transitions. Word has length 280 [2020-10-14 22:13:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:50,053 INFO L479 AbstractCegarLoop]: Abstraction has 2077 states and 2402 transitions. [2020-10-14 22:13:50,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2402 transitions. [2020-10-14 22:13:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 22:13:50,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:50,057 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:13:50,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:13:50,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1600135980, now seen corresponding path program 1 times [2020-10-14 22:13:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:50,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148176965] [2020-10-14 22:13:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:53,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:53,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 22:13:53,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:13:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3900 [2020-10-14 22:13:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:53,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:13:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 22:13:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 22:13:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:54,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:54,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:54,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:54,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:13:54,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:54,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:13:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:13:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:13:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:13:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 22:13:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:54,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:13:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:13:54,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148176965] [2020-10-14 22:13:54,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:54,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:13:54,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016053707] [2020-10-14 22:13:54,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:13:54,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:13:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:13:54,777 INFO L87 Difference]: Start difference. First operand 2077 states and 2402 transitions. Second operand 6 states. [2020-10-14 22:13:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:57,242 INFO L93 Difference]: Finished difference Result 4159 states and 4816 transitions. [2020-10-14 22:13:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:13:57,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 283 [2020-10-14 22:13:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:57,267 INFO L225 Difference]: With dead ends: 4159 [2020-10-14 22:13:57,268 INFO L226 Difference]: Without dead ends: 2088 [2020-10-14 22:13:57,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-14 22:13:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2077. [2020-10-14 22:13:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2020-10-14 22:13:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2327 transitions. [2020-10-14 22:13:57,333 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2327 transitions. Word has length 283 [2020-10-14 22:13:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:57,334 INFO L479 AbstractCegarLoop]: Abstraction has 2077 states and 2327 transitions. [2020-10-14 22:13:57,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:13:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2327 transitions. [2020-10-14 22:13:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 22:13:57,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:57,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:13:57,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:13:57,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:57,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1352261422, now seen corresponding path program 1 times [2020-10-14 22:13:57,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:57,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899130985] [2020-10-14 22:13:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:02,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:02,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-14 22:14:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:14:02,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:02,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 22:14:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:14:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:02,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:02,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:02,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:14:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:14:02,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:02,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:14:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:14:02,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 22:14:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:02,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:02,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 22:14:02,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:02,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 22:14:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-14 22:14:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:14:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:14:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:03,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:14:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 264 proven. 106 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 22:14:03,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899130985] [2020-10-14 22:14:03,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:03,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:03,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377215358] [2020-10-14 22:14:03,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:03,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:03,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:03,488 INFO L87 Difference]: Start difference. First operand 2077 states and 2327 transitions. Second operand 7 states. [2020-10-14 22:14:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:07,509 INFO L93 Difference]: Finished difference Result 5931 states and 6819 transitions. [2020-10-14 22:14:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:14:07,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-14 22:14:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:07,533 INFO L225 Difference]: With dead ends: 5931 [2020-10-14 22:14:07,533 INFO L226 Difference]: Without dead ends: 3860 [2020-10-14 22:14:07,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:14:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-10-14 22:14:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3461. [2020-10-14 22:14:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3461 states. [2020-10-14 22:14:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 3801 transitions. [2020-10-14 22:14:07,647 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 3801 transitions. Word has length 390 [2020-10-14 22:14:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:07,648 INFO L479 AbstractCegarLoop]: Abstraction has 3461 states and 3801 transitions. [2020-10-14 22:14:07,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 3801 transitions. [2020-10-14 22:14:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-14 22:14:07,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:07,661 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 22:14:07,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:14:07,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2090422298, now seen corresponding path program 1 times [2020-10-14 22:14:07,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:07,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297959792] [2020-10-14 22:14:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:12,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:12,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-14 22:14:12,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:14:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 22:14:12,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:12,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-14 22:14:12,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 22:14:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:12,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:12,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:14:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:14:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 22:14:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:13,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:13,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:14:13,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:13,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:14:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-14 22:14:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 22:14:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:14:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:13,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:14:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 22:14:13,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297959792] [2020-10-14 22:14:13,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:13,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:13,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716734602] [2020-10-14 22:14:13,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:13,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:13,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:13,838 INFO L87 Difference]: Start difference. First operand 3461 states and 3801 transitions. Second operand 7 states. [2020-10-14 22:14:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:16,903 INFO L93 Difference]: Finished difference Result 9661 states and 10735 transitions. [2020-10-14 22:14:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:14:16,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-14 22:14:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:16,935 INFO L225 Difference]: With dead ends: 9661 [2020-10-14 22:14:16,935 INFO L226 Difference]: Without dead ends: 6548 [2020-10-14 22:14:16,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:14:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2020-10-14 22:14:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5190. [2020-10-14 22:14:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5190 states. [2020-10-14 22:14:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 5819 transitions. [2020-10-14 22:14:17,109 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 5819 transitions. Word has length 436 [2020-10-14 22:14:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:17,110 INFO L479 AbstractCegarLoop]: Abstraction has 5190 states and 5819 transitions. [2020-10-14 22:14:17,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 5819 transitions. [2020-10-14 22:14:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-14 22:14:17,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:17,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:17,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:14:17,128 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:17,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1359982515, now seen corresponding path program 1 times [2020-10-14 22:14:17,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:17,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66152975] [2020-10-14 22:14:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-14 22:14:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 22:14:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:14:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:14:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 22:14:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:14:22,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:14:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:22,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-14 22:14:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 22:14:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 22:14:23,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66152975] [2020-10-14 22:14:23,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:23,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:23,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014193285] [2020-10-14 22:14:23,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:23,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:23,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:23,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:23,097 INFO L87 Difference]: Start difference. First operand 5190 states and 5819 transitions. Second operand 7 states. [2020-10-14 22:14:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:26,073 INFO L93 Difference]: Finished difference Result 10417 states and 11710 transitions. [2020-10-14 22:14:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:14:26,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-14 22:14:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:26,100 INFO L225 Difference]: With dead ends: 10417 [2020-10-14 22:14:26,101 INFO L226 Difference]: Without dead ends: 5232 [2020-10-14 22:14:26,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:14:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5232 states. [2020-10-14 22:14:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5232 to 4860. [2020-10-14 22:14:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4860 states. [2020-10-14 22:14:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 5331 transitions. [2020-10-14 22:14:26,242 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 5331 transitions. Word has length 487 [2020-10-14 22:14:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:26,244 INFO L479 AbstractCegarLoop]: Abstraction has 4860 states and 5331 transitions. [2020-10-14 22:14:26,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 5331 transitions. [2020-10-14 22:14:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-14 22:14:26,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:26,275 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:26,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:14:26,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:26,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1903294474, now seen corresponding path program 1 times [2020-10-14 22:14:26,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:26,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378477481] [2020-10-14 22:14:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:31,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-14 22:14:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:14:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-14 22:14:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:31,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:31,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:31,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:14:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:31,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 22:14:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:14:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-14 22:14:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:32,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:32,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:14:32,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 22:14:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 22:14:32,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378477481] [2020-10-14 22:14:32,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:32,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:14:32,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663377427] [2020-10-14 22:14:32,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:14:32,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:14:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:14:32,892 INFO L87 Difference]: Start difference. First operand 4860 states and 5331 transitions. Second operand 8 states. [2020-10-14 22:14:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:37,788 INFO L93 Difference]: Finished difference Result 10136 states and 11380 transitions. [2020-10-14 22:14:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:14:37,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 598 [2020-10-14 22:14:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:37,819 INFO L225 Difference]: With dead ends: 10136 [2020-10-14 22:14:37,819 INFO L226 Difference]: Without dead ends: 5621 [2020-10-14 22:14:37,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:14:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2020-10-14 22:14:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 5547. [2020-10-14 22:14:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2020-10-14 22:14:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 6032 transitions. [2020-10-14 22:14:37,973 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 6032 transitions. Word has length 598 [2020-10-14 22:14:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:37,975 INFO L479 AbstractCegarLoop]: Abstraction has 5547 states and 6032 transitions. [2020-10-14 22:14:37,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:14:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 6032 transitions. [2020-10-14 22:14:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-14 22:14:37,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:37,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:37,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:14:37,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash -894576431, now seen corresponding path program 1 times [2020-10-14 22:14:37,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:37,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603018496] [2020-10-14 22:14:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:43,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:43,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 643 [2020-10-14 22:14:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 22:14:43,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:43,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 22:14:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-14 22:14:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:43,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:43,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:43,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 22:14:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 22:14:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:43,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:43,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 22:14:43,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-14 22:14:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:43,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:14:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:43,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 22:14:43,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:14:43,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:43,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:14:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:14:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-14 22:14:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:44,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:44,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 22:14:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 22:14:44,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:44,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 22:14:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 298 proven. 123 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 22:14:44,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603018496] [2020-10-14 22:14:44,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:44,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:44,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743301261] [2020-10-14 22:14:44,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:44,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:44,386 INFO L87 Difference]: Start difference. First operand 5547 states and 6032 transitions. Second operand 7 states. [2020-10-14 22:14:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:47,119 INFO L93 Difference]: Finished difference Result 13137 states and 14453 transitions. [2020-10-14 22:14:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:14:47,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-14 22:14:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:47,144 INFO L225 Difference]: With dead ends: 13137 [2020-10-14 22:14:47,144 INFO L226 Difference]: Without dead ends: 7604 [2020-10-14 22:14:47,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:14:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7604 states. [2020-10-14 22:14:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7604 to 6225. [2020-10-14 22:14:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6225 states. [2020-10-14 22:14:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 6728 transitions. [2020-10-14 22:14:47,283 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 6728 transitions. Word has length 627 [2020-10-14 22:14:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:47,284 INFO L479 AbstractCegarLoop]: Abstraction has 6225 states and 6728 transitions. [2020-10-14 22:14:47,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 6728 transitions. [2020-10-14 22:14:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2020-10-14 22:14:47,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:47,304 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:14:47,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:14:47,305 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:47,306 INFO L82 PathProgramCache]: Analyzing trace with hash -310415545, now seen corresponding path program 1 times [2020-10-14 22:14:47,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:47,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525056042] [2020-10-14 22:14:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 959 [2020-10-14 22:14:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 22:14:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:52,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 288 [2020-10-14 22:14:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:14:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:52,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 22:14:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:14:52,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:52,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 22:14:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:52,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 22:14:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-10-14 22:14:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:14:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-10-14 22:14:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:14:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:14:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 487 proven. 272 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2020-10-14 22:14:54,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525056042] [2020-10-14 22:14:54,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:54,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:54,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391930993] [2020-10-14 22:14:54,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:54,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:54,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:54,511 INFO L87 Difference]: Start difference. First operand 6225 states and 6728 transitions. Second operand 7 states. [2020-10-14 22:14:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:57,712 INFO L93 Difference]: Finished difference Result 13596 states and 15123 transitions. [2020-10-14 22:14:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:14:57,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 941 [2020-10-14 22:14:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:57,740 INFO L225 Difference]: With dead ends: 13596 [2020-10-14 22:14:57,740 INFO L226 Difference]: Without dead ends: 7377 [2020-10-14 22:14:57,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:14:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2020-10-14 22:14:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7246. [2020-10-14 22:14:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7246 states. [2020-10-14 22:14:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 7774 transitions. [2020-10-14 22:14:57,899 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 7774 transitions. Word has length 941 [2020-10-14 22:14:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:57,900 INFO L479 AbstractCegarLoop]: Abstraction has 7246 states and 7774 transitions. [2020-10-14 22:14:57,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 7774 transitions. [2020-10-14 22:14:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-14 22:14:57,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:57,933 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:57,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:14:57,934 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1614207488, now seen corresponding path program 1 times [2020-10-14 22:14:57,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:57,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085448916] [2020-10-14 22:14:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-14 22:15:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:03,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:15:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:15:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 22:15:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:03,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:03,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:03,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:15:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:03,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:15:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:15:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:03,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-14 22:15:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:04,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 506 proven. 272 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2020-10-14 22:15:05,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085448916] [2020-10-14 22:15:05,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:05,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:05,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954502804] [2020-10-14 22:15:05,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:05,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:05,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:05,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:05,237 INFO L87 Difference]: Start difference. First operand 7246 states and 7774 transitions. Second operand 7 states. [2020-10-14 22:15:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:08,329 INFO L93 Difference]: Finished difference Result 15862 states and 17045 transitions. [2020-10-14 22:15:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:15:08,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-14 22:15:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:08,351 INFO L225 Difference]: With dead ends: 15862 [2020-10-14 22:15:08,351 INFO L226 Difference]: Without dead ends: 8622 [2020-10-14 22:15:08,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:15:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2020-10-14 22:15:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 8602. [2020-10-14 22:15:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8602 states. [2020-10-14 22:15:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 9166 transitions. [2020-10-14 22:15:08,499 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 9166 transitions. Word has length 960 [2020-10-14 22:15:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:08,501 INFO L479 AbstractCegarLoop]: Abstraction has 8602 states and 9166 transitions. [2020-10-14 22:15:08,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 9166 transitions. [2020-10-14 22:15:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-14 22:15:08,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:08,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:08,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:15:08,526 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1689225551, now seen corresponding path program 1 times [2020-10-14 22:15:08,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:08,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666162809] [2020-10-14 22:15:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:15:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:15:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-14 22:15:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:15:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:13,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:13,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:15:13,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:15:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:15:13,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:13,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:15:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 22:15:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:14,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:14,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 22:15:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-14 22:15:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:14,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:14,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-14 22:15:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:14,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:14,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:14,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:14,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:15:14,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:14,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:14,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:14,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 306 proven. 545 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2020-10-14 22:15:15,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666162809] [2020-10-14 22:15:15,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:15,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:15,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590668655] [2020-10-14 22:15:15,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:15,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:15,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:15,215 INFO L87 Difference]: Start difference. First operand 8602 states and 9166 transitions. Second operand 7 states. [2020-10-14 22:15:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:17,771 INFO L93 Difference]: Finished difference Result 18588 states and 19998 transitions. [2020-10-14 22:15:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:15:17,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1041 [2020-10-14 22:15:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:17,815 INFO L225 Difference]: With dead ends: 18588 [2020-10-14 22:15:17,815 INFO L226 Difference]: Without dead ends: 9992 [2020-10-14 22:15:17,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:15:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9992 states. [2020-10-14 22:15:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9992 to 9966. [2020-10-14 22:15:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9966 states. [2020-10-14 22:15:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9966 states to 9966 states and 10630 transitions. [2020-10-14 22:15:17,994 INFO L78 Accepts]: Start accepts. Automaton has 9966 states and 10630 transitions. Word has length 1041 [2020-10-14 22:15:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:17,996 INFO L479 AbstractCegarLoop]: Abstraction has 9966 states and 10630 transitions. [2020-10-14 22:15:17,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9966 states and 10630 transitions. [2020-10-14 22:15:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-10-14 22:15:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:18,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:15:18,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:15:18,030 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:18,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1615099590, now seen corresponding path program 1 times [2020-10-14 22:15:18,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:18,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026239097] [2020-10-14 22:15:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1208 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:23,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:23,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:23,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:15:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:23,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:15:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 22:15:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:23,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 22:15:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:24,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:24,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 22:15:24,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:24,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:24,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-14 22:15:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:24,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:24,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:24,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:15:24,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:24,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 733 proven. 272 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-10-14 22:15:25,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026239097] [2020-10-14 22:15:25,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:25,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:15:25,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931811020] [2020-10-14 22:15:25,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:15:25,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:25,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:15:25,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:15:25,619 INFO L87 Difference]: Start difference. First operand 9966 states and 10630 transitions. Second operand 8 states. [2020-10-14 22:15:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:29,836 INFO L93 Difference]: Finished difference Result 21635 states and 23211 transitions. [2020-10-14 22:15:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:15:29,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1190 [2020-10-14 22:15:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:29,874 INFO L225 Difference]: With dead ends: 21635 [2020-10-14 22:15:29,874 INFO L226 Difference]: Without dead ends: 11675 [2020-10-14 22:15:29,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:15:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11675 states. [2020-10-14 22:15:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 10983. [2020-10-14 22:15:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10983 states. [2020-10-14 22:15:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 11749 transitions. [2020-10-14 22:15:30,099 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 11749 transitions. Word has length 1190 [2020-10-14 22:15:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:30,100 INFO L479 AbstractCegarLoop]: Abstraction has 10983 states and 11749 transitions. [2020-10-14 22:15:30,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:15:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 11749 transitions. [2020-10-14 22:15:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2020-10-14 22:15:30,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:30,156 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:15:30,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:15:30,157 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash 118829521, now seen corresponding path program 1 times [2020-10-14 22:15:30,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:30,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357531917] [2020-10-14 22:15:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1371 [2020-10-14 22:15:35,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 700 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:35,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:35,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:15:35,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:35,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:15:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-14 22:15:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-14 22:15:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:35,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:15:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-14 22:15:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-14 22:15:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 965 [2020-10-14 22:15:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2636 backedges. 1009 proven. 272 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2020-10-14 22:15:38,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357531917] [2020-10-14 22:15:38,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:38,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:38,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014400477] [2020-10-14 22:15:38,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:38,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:38,013 INFO L87 Difference]: Start difference. First operand 10983 states and 11749 transitions. Second operand 7 states. [2020-10-14 22:15:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:41,209 INFO L93 Difference]: Finished difference Result 23002 states and 24627 transitions. [2020-10-14 22:15:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:15:41,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1349 [2020-10-14 22:15:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:41,244 INFO L225 Difference]: With dead ends: 23002 [2020-10-14 22:15:41,244 INFO L226 Difference]: Without dead ends: 12025 [2020-10-14 22:15:41,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:15:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12025 states. [2020-10-14 22:15:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12025 to 11320. [2020-10-14 22:15:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11320 states. [2020-10-14 22:15:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 12107 transitions. [2020-10-14 22:15:41,451 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 12107 transitions. Word has length 1349 [2020-10-14 22:15:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:41,453 INFO L479 AbstractCegarLoop]: Abstraction has 11320 states and 12107 transitions. [2020-10-14 22:15:41,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 12107 transitions. [2020-10-14 22:15:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2020-10-14 22:15:41,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:41,492 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:15:41,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:15:41,493 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1159210566, now seen corresponding path program 1 times [2020-10-14 22:15:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412272182] [2020-10-14 22:15:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1447 [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-14 22:15:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 22:15:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:15:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-14 22:15:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:15:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-14 22:15:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 22:15:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-14 22:15:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:15:47,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:15:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:47,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1039 [2020-10-14 22:15:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:48,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:48,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:48,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:15:48,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:48,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:48,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3127 backedges. 828 proven. 567 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2020-10-14 22:15:49,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412272182] [2020-10-14 22:15:49,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:49,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:49,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263717528] [2020-10-14 22:15:49,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:49,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:49,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:49,636 INFO L87 Difference]: Start difference. First operand 11320 states and 12107 transitions. Second operand 7 states. [2020-10-14 22:15:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:52,746 INFO L93 Difference]: Finished difference Result 23113 states and 25101 transitions. [2020-10-14 22:15:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:15:52,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1423 [2020-10-14 22:15:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:52,781 INFO L225 Difference]: With dead ends: 23113 [2020-10-14 22:15:52,781 INFO L226 Difference]: Without dead ends: 11799 [2020-10-14 22:15:52,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:15:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11799 states. [2020-10-14 22:15:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11799 to 11657. [2020-10-14 22:15:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11657 states. [2020-10-14 22:15:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11657 states to 11657 states and 12447 transitions. [2020-10-14 22:15:53,010 INFO L78 Accepts]: Start accepts. Automaton has 11657 states and 12447 transitions. Word has length 1423 [2020-10-14 22:15:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:53,011 INFO L479 AbstractCegarLoop]: Abstraction has 11657 states and 12447 transitions. [2020-10-14 22:15:53,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11657 states and 12447 transitions. [2020-10-14 22:15:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2020-10-14 22:15:53,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:53,049 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:15:53,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:15:53,050 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash -912697765, now seen corresponding path program 1 times [2020-10-14 22:15:53,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:53,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553474691] [2020-10-14 22:15:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1526 [2020-10-14 22:15:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 22:15:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:58,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:15:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:15:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 22:15:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:58,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:15:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:58,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:58,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 22:15:58,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:58,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:15:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:15:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:15:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:15:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:58,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 22:15:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:58,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-14 22:15:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:15:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:15:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:15:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-14 22:15:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:15:59,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 22:15:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-14 22:15:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:15:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-14 22:15:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 22:15:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 843 [2020-10-14 22:15:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1116 [2020-10-14 22:15:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:15:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:59,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 357 proven. 976 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2020-10-14 22:16:00,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553474691] [2020-10-14 22:16:00,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:00,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:00,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794001959] [2020-10-14 22:16:00,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:00,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:00,921 INFO L87 Difference]: Start difference. First operand 11657 states and 12447 transitions. Second operand 7 states. [2020-10-14 22:16:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:03,791 INFO L93 Difference]: Finished difference Result 23667 states and 25293 transitions. [2020-10-14 22:16:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:16:03,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1500 [2020-10-14 22:16:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:03,817 INFO L225 Difference]: With dead ends: 23667 [2020-10-14 22:16:03,817 INFO L226 Difference]: Without dead ends: 12016 [2020-10-14 22:16:03,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:16:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2020-10-14 22:16:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 11996. [2020-10-14 22:16:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11996 states. [2020-10-14 22:16:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11996 states to 11996 states and 12808 transitions. [2020-10-14 22:16:04,013 INFO L78 Accepts]: Start accepts. Automaton has 11996 states and 12808 transitions. Word has length 1500 [2020-10-14 22:16:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:04,013 INFO L479 AbstractCegarLoop]: Abstraction has 11996 states and 12808 transitions. [2020-10-14 22:16:04,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:16:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 11996 states and 12808 transitions. [2020-10-14 22:16:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2020-10-14 22:16:04,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:04,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:16:04,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:16:04,043 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:04,044 INFO L82 PathProgramCache]: Analyzing trace with hash -37151694, now seen corresponding path program 1 times [2020-10-14 22:16:04,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:04,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429439356] [2020-10-14 22:16:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1570 [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:16:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:16:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 22:16:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:09,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:16:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:16:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 22:16:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 22:16:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 22:16:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:16:09,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 22:16:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-14 22:16:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:16:10,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:16:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 22:16:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-14 22:16:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:16:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-14 22:16:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-14 22:16:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:16:10,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:16:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2020-10-14 22:16:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:16:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:16:10,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 22:16:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 885 [2020-10-14 22:16:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1158 [2020-10-14 22:16:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:16:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:16:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:16:10,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3792 backedges. 408 proven. 839 refuted. 0 times theorem prover too weak. 2545 trivial. 0 not checked. [2020-10-14 22:16:12,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429439356] [2020-10-14 22:16:12,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:12,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:16:12,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433490463] [2020-10-14 22:16:12,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:16:12,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:12,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:16:12,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:16:12,218 INFO L87 Difference]: Start difference. First operand 11996 states and 12808 transitions. Second operand 8 states. [2020-10-14 22:16:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:16,733 INFO L93 Difference]: Finished difference Result 28744 states and 30881 transitions. [2020-10-14 22:16:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:16:16,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1542 [2020-10-14 22:16:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:16,762 INFO L225 Difference]: With dead ends: 28744 [2020-10-14 22:16:16,762 INFO L226 Difference]: Without dead ends: 17091 [2020-10-14 22:16:16,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:16:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17091 states. [2020-10-14 22:16:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17091 to 16072. [2020-10-14 22:16:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16072 states. [2020-10-14 22:16:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16072 states to 16072 states and 17096 transitions. [2020-10-14 22:16:17,006 INFO L78 Accepts]: Start accepts. Automaton has 16072 states and 17096 transitions. Word has length 1542 [2020-10-14 22:16:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:17,006 INFO L479 AbstractCegarLoop]: Abstraction has 16072 states and 17096 transitions. [2020-10-14 22:16:17,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:16:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 16072 states and 17096 transitions. [2020-10-14 22:16:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1748 [2020-10-14 22:16:17,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:17,044 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:16:17,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:16:17,045 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1601609867, now seen corresponding path program 1 times [2020-10-14 22:16:17,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:17,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051626703] [2020-10-14 22:16:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:18,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:22,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1775 [2020-10-14 22:16:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:16:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5402 [2020-10-14 22:16:22,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:22,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:16:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:16:22,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-14 22:16:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:22,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:16:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:22,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:16:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:23,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:16:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:16:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:23,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:16:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-14 22:16:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:16:24,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:16:24,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 22:16:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-14 22:16:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:16:24,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:16:24,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:16:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-14 22:16:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:16:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 22:16:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-14 22:16:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1016 [2020-10-14 22:16:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:16:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-14 22:16:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:16:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1363 [2020-10-14 22:16:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 22:16:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:24,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:24,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:16:24,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4525 backedges. 673 proven. 990 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2020-10-14 22:16:27,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051626703] [2020-10-14 22:16:27,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:27,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904768455] [2020-10-14 22:16:27,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:27,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:27,394 INFO L87 Difference]: Start difference. First operand 16072 states and 17096 transitions. Second operand 7 states. [2020-10-14 22:16:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:30,102 INFO L93 Difference]: Finished difference Result 31811 states and 33873 transitions. [2020-10-14 22:16:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:16:30,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1747 [2020-10-14 22:16:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:30,126 INFO L225 Difference]: With dead ends: 31811 [2020-10-14 22:16:30,126 INFO L226 Difference]: Without dead ends: 16421 [2020-10-14 22:16:30,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:16:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16421 states. [2020-10-14 22:16:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16421 to 16409. [2020-10-14 22:16:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16409 states. [2020-10-14 22:16:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16409 states to 16409 states and 17440 transitions. [2020-10-14 22:16:30,346 INFO L78 Accepts]: Start accepts. Automaton has 16409 states and 17440 transitions. Word has length 1747 [2020-10-14 22:16:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:30,347 INFO L479 AbstractCegarLoop]: Abstraction has 16409 states and 17440 transitions. [2020-10-14 22:16:30,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:16:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 16409 states and 17440 transitions. [2020-10-14 22:16:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1843 [2020-10-14 22:16:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:30,384 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:16:30,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:16:30,385 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:30,385 INFO L82 PathProgramCache]: Analyzing trace with hash 282288395, now seen corresponding path program 1 times [2020-10-14 22:16:30,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:30,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228428396] [2020-10-14 22:16:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1872 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5275 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1476 [2020-10-14 22:16:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-14 22:16:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,385 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-14 22:16:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:16:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:16:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:16:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:16:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:16:36,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:16:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-14 22:16:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:16:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-14 22:16:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2020-10-14 22:16:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:37,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:37,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1185 [2020-10-14 22:16:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:37,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:37,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:37,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-14 22:16:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:37,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1458 [2020-10-14 22:16:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:41,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:41,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:16:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:16:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3844 [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-14 22:16:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:41,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:16:41,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:41,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:16:41,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:41,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:16:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 22:16:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5354 backedges. 1919 proven. 2 refuted. 0 times theorem prover too weak. 3433 trivial. 0 not checked. [2020-10-14 22:16:43,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228428396] [2020-10-14 22:16:43,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:43,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:16:43,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824802111] [2020-10-14 22:16:43,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:16:43,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:43,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:16:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:16:43,222 INFO L87 Difference]: Start difference. First operand 16409 states and 17440 transitions. Second operand 8 states. [2020-10-14 22:16:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:48,398 INFO L93 Difference]: Finished difference Result 32826 states and 34924 transitions. [2020-10-14 22:16:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:16:48,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1842 [2020-10-14 22:16:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:48,425 INFO L225 Difference]: With dead ends: 32826 [2020-10-14 22:16:48,425 INFO L226 Difference]: Without dead ends: 17099 [2020-10-14 22:16:48,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:16:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17099 states. [2020-10-14 22:16:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17099 to 16411. [2020-10-14 22:16:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16411 states. [2020-10-14 22:16:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16411 states to 16411 states and 17417 transitions. [2020-10-14 22:16:48,629 INFO L78 Accepts]: Start accepts. Automaton has 16411 states and 17417 transitions. Word has length 1842 [2020-10-14 22:16:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:48,630 INFO L479 AbstractCegarLoop]: Abstraction has 16411 states and 17417 transitions. [2020-10-14 22:16:48,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:16:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16411 states and 17417 transitions. [2020-10-14 22:16:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1955 [2020-10-14 22:16:48,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:48,672 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:16:48,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 22:16:48,672 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash 604786326, now seen corresponding path program 1 times [2020-10-14 22:16:48,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:48,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037502366] [2020-10-14 22:16:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking...