/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:50:20,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:50:20,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:50:20,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:50:20,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:50:20,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:50:20,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:50:20,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:50:20,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:50:20,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:50:20,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:50:20,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:50:20,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:50:20,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:50:20,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:50:20,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:50:20,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:50:20,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:50:20,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:50:20,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:50:20,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:50:20,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:50:20,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:50:20,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:50:20,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:50:20,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:50:20,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:50:20,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:50:20,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:50:20,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:50:20,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:50:20,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:50:20,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:50:20,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:50:20,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:50:20,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:50:20,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:50:20,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:50:20,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:50:20,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:50:20,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:50:20,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:50:20,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:50:20,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:50:20,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:50:20,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:50:20,775 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:50:20,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:50:20,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:50:20,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:50:20,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:50:20,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:50:20,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:50:20,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:50:20,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:50:20,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:50:20,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:50:20,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:50:20,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:50:20,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:50:20,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:50:20,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:50:20,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:50:20,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:50:20,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:50:20,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:50:20,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:50:20,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:50:20,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:50:20,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:50:20,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:50:20,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:50:21,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:50:21,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:50:21,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:50:21,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:50:21,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:50:21,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-14 00:50:21,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4874c9b7/12e047baf6bb49c4bafa2609e7e88396/FLAGbde44b0db [2020-10-14 00:50:21,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:50:21,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-14 00:50:21,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4874c9b7/12e047baf6bb49c4bafa2609e7e88396/FLAGbde44b0db [2020-10-14 00:50:21,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4874c9b7/12e047baf6bb49c4bafa2609e7e88396 [2020-10-14 00:50:21,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:50:21,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:50:21,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:21,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:50:21,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:50:21,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:21" (1/1) ... [2020-10-14 00:50:21,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794240ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:21, skipping insertion in model container [2020-10-14 00:50:21,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:21" (1/1) ... [2020-10-14 00:50:22,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:50:22,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:50:22,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:22,921 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:50:23,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:23,238 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:50:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23 WrapperNode [2020-10-14 00:50:23,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:23,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:50:23,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:50:23,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:50:23,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... [2020-10-14 00:50:23,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:50:23,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:50:23,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:50:23,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:50:23,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:50:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:50:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:50:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:50:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:50:23,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:50:25,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:50:25,288 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:50:25,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:25 BoogieIcfgContainer [2020-10-14 00:50:25,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:50:25,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:50:25,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:50:25,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:50:25,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:50:21" (1/3) ... [2020-10-14 00:50:25,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:25, skipping insertion in model container [2020-10-14 00:50:25,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:23" (2/3) ... [2020-10-14 00:50:25,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:25, skipping insertion in model container [2020-10-14 00:50:25,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:25" (3/3) ... [2020-10-14 00:50:25,305 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2020-10-14 00:50:25,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:50:25,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:50:25,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:50:25,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:50:25,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:50:25,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:50:25,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:50:25,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:50:25,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:50:25,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:50:25,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:50:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:50:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 00:50:25,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:25,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:25,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2031049480, now seen corresponding path program 1 times [2020-10-14 00:50:25,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:25,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158794429] [2020-10-14 00:50:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 00:50:29,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3701 [2020-10-14 00:50:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:29,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:50:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 00:50:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:50:30,041 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:30,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:30,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:30,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:30,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:50:30,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:30,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:30,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158794429] [2020-10-14 00:50:30,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:50:30,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:50:30,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884504571] [2020-10-14 00:50:30,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:50:30,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:50:30,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:50:30,185 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:50:30,445 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:50:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:32,852 INFO L93 Difference]: Finished difference Result 872 states and 1533 transitions. [2020-10-14 00:50:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:32,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 00:50:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:32,887 INFO L225 Difference]: With dead ends: 872 [2020-10-14 00:50:32,887 INFO L226 Difference]: Without dead ends: 483 [2020-10-14 00:50:32,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-14 00:50:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 465. [2020-10-14 00:50:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-14 00:50:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 750 transitions. [2020-10-14 00:50:32,981 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 750 transitions. Word has length 177 [2020-10-14 00:50:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:32,982 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 750 transitions. [2020-10-14 00:50:32,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:50:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 750 transitions. [2020-10-14 00:50:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 00:50:32,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:32,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:32,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:50:32,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1152351313, now seen corresponding path program 1 times [2020-10-14 00:50:32,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:32,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456839784] [2020-10-14 00:50:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:35,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:35,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 00:50:35,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:50:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-14 00:50:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:35,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 00:50:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 00:50:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:36,101 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:36,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:36,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:36,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:36,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:36,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:36,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:36,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:36,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:36,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:36,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:50:36,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:50:36,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:36,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:50:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:36,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456839784] [2020-10-14 00:50:36,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:36,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:50:36,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590803430] [2020-10-14 00:50:36,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:36,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:36,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:36,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:36,272 INFO L87 Difference]: Start difference. First operand 465 states and 750 transitions. Second operand 5 states. [2020-10-14 00:50:36,431 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:39,098 INFO L93 Difference]: Finished difference Result 1352 states and 2210 transitions. [2020-10-14 00:50:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:39,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 00:50:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:39,106 INFO L225 Difference]: With dead ends: 1352 [2020-10-14 00:50:39,106 INFO L226 Difference]: Without dead ends: 893 [2020-10-14 00:50:39,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:50:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-14 00:50:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 887. [2020-10-14 00:50:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-14 00:50:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1390 transitions. [2020-10-14 00:50:39,158 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1390 transitions. Word has length 187 [2020-10-14 00:50:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:39,159 INFO L479 AbstractCegarLoop]: Abstraction has 887 states and 1390 transitions. [2020-10-14 00:50:39,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1390 transitions. [2020-10-14 00:50:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 00:50:39,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:39,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:39,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:50:39,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -909805824, now seen corresponding path program 1 times [2020-10-14 00:50:39,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:39,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144388336] [2020-10-14 00:50:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 00:50:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 00:50:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:50:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:50:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:40,417 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:40,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:50:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:40,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:50:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 00:50:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:40,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:40,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:50:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:40,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144388336] [2020-10-14 00:50:40,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:50:40,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 00:50:40,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403082334] [2020-10-14 00:50:40,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:50:40,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:40,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:50:40,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:50:40,825 INFO L87 Difference]: Start difference. First operand 887 states and 1390 transitions. Second operand 8 states. [2020-10-14 00:50:41,025 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:41,400 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:50:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:43,688 INFO L93 Difference]: Finished difference Result 2219 states and 3547 transitions. [2020-10-14 00:50:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:50:43,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-10-14 00:50:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:43,697 INFO L225 Difference]: With dead ends: 2219 [2020-10-14 00:50:43,698 INFO L226 Difference]: Without dead ends: 1338 [2020-10-14 00:50:43,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-14 00:50:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1326. [2020-10-14 00:50:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-10-14 00:50:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1926 transitions. [2020-10-14 00:50:43,764 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1926 transitions. Word has length 191 [2020-10-14 00:50:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:43,768 INFO L479 AbstractCegarLoop]: Abstraction has 1326 states and 1926 transitions. [2020-10-14 00:50:43,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:50:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1926 transitions. [2020-10-14 00:50:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 00:50:43,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:43,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:43,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:50:43,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:43,776 INFO L82 PathProgramCache]: Analyzing trace with hash 897128468, now seen corresponding path program 1 times [2020-10-14 00:50:43,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:43,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174740692] [2020-10-14 00:50:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 00:50:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-10-14 00:50:47,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:50:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:50:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:47,287 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:47,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:47,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:50:47,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:50:47,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:50:47,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:50:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:47,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:47,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:50:47,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 00:50:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:50:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:50:47,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174740692] [2020-10-14 00:50:47,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:47,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:47,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893892974] [2020-10-14 00:50:47,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:47,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:47,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:47,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:47,669 INFO L87 Difference]: Start difference. First operand 1326 states and 1926 transitions. Second operand 7 states. [2020-10-14 00:50:47,871 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:48,847 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:50:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:50,908 INFO L93 Difference]: Finished difference Result 4048 states and 6178 transitions. [2020-10-14 00:50:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:50:50,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 00:50:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:50,928 INFO L225 Difference]: With dead ends: 4048 [2020-10-14 00:50:50,928 INFO L226 Difference]: Without dead ends: 2728 [2020-10-14 00:50:50,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2020-10-14 00:50:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2662. [2020-10-14 00:50:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-10-14 00:50:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3849 transitions. [2020-10-14 00:50:51,034 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3849 transitions. Word has length 203 [2020-10-14 00:50:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:51,034 INFO L479 AbstractCegarLoop]: Abstraction has 2662 states and 3849 transitions. [2020-10-14 00:50:51,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3849 transitions. [2020-10-14 00:50:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-14 00:50:51,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:51,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:51,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:50:51,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1738837653, now seen corresponding path program 1 times [2020-10-14 00:50:51,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:51,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529607621] [2020-10-14 00:50:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 00:50:54,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:50:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3203 [2020-10-14 00:50:54,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:54,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:50:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 00:50:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:54,583 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:50:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:54,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:54,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:54,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 00:50:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:50:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:54,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529607621] [2020-10-14 00:50:54,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:54,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:50:54,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369002670] [2020-10-14 00:50:54,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:54,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:54,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:54,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:54,883 INFO L87 Difference]: Start difference. First operand 2662 states and 3849 transitions. Second operand 5 states. [2020-10-14 00:50:55,134 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:57,398 INFO L93 Difference]: Finished difference Result 7906 states and 11850 transitions. [2020-10-14 00:50:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:57,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-14 00:50:57,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:57,425 INFO L225 Difference]: With dead ends: 7906 [2020-10-14 00:50:57,425 INFO L226 Difference]: Without dead ends: 5250 [2020-10-14 00:50:57,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:50:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2020-10-14 00:50:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 3972. [2020-10-14 00:50:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3972 states. [2020-10-14 00:50:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 5680 transitions. [2020-10-14 00:50:57,567 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 5680 transitions. Word has length 209 [2020-10-14 00:50:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:57,569 INFO L479 AbstractCegarLoop]: Abstraction has 3972 states and 5680 transitions. [2020-10-14 00:50:57,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 5680 transitions. [2020-10-14 00:50:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 00:50:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:57,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:50:57,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:50:57,583 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1568023809, now seen corresponding path program 1 times [2020-10-14 00:50:57,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:57,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713758924] [2020-10-14 00:50:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:59,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 00:50:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-14 00:50:59,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:59,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:50:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:50:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:50:59,412 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:59,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:59,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:59,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:50:59,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:59,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:50:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 00:50:59,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:59,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:50:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:50:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:50:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:50:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:59,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:50:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:50:59,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713758924] [2020-10-14 00:50:59,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:59,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:59,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931692866] [2020-10-14 00:50:59,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:59,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:59,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:59,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:59,866 INFO L87 Difference]: Start difference. First operand 3972 states and 5680 transitions. Second operand 7 states. [2020-10-14 00:51:00,276 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:51:00,586 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 00:51:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:04,969 INFO L93 Difference]: Finished difference Result 11170 states and 17738 transitions. [2020-10-14 00:51:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:04,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-14 00:51:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:05,009 INFO L225 Difference]: With dead ends: 11170 [2020-10-14 00:51:05,010 INFO L226 Difference]: Without dead ends: 7204 [2020-10-14 00:51:05,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2020-10-14 00:51:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 7037. [2020-10-14 00:51:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-14 00:51:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 9752 transitions. [2020-10-14 00:51:05,269 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 9752 transitions. Word has length 214 [2020-10-14 00:51:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:05,270 INFO L479 AbstractCegarLoop]: Abstraction has 7037 states and 9752 transitions. [2020-10-14 00:51:05,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 9752 transitions. [2020-10-14 00:51:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 00:51:05,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:05,294 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:05,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:51:05,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1218316103, now seen corresponding path program 1 times [2020-10-14 00:51:05,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:05,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692753444] [2020-10-14 00:51:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 00:51:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2560 [2020-10-14 00:51:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:07,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:51:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:51:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 00:51:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:08,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:51:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:08,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:51:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:08,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:08,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:51:08,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:51:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:51:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:51:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:51:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:51:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:51:08,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692753444] [2020-10-14 00:51:08,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:08,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:08,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241041953] [2020-10-14 00:51:08,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:51:08,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:51:08,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:51:08,411 INFO L87 Difference]: Start difference. First operand 7037 states and 9752 transitions. Second operand 8 states. [2020-10-14 00:51:08,553 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:08,926 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:11,586 INFO L93 Difference]: Finished difference Result 18107 states and 26506 transitions. [2020-10-14 00:51:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:51:11,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-14 00:51:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:11,639 INFO L225 Difference]: With dead ends: 18107 [2020-10-14 00:51:11,639 INFO L226 Difference]: Without dead ends: 11510 [2020-10-14 00:51:11,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:51:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-14 00:51:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11185. [2020-10-14 00:51:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11185 states. [2020-10-14 00:51:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11185 states to 11185 states and 15479 transitions. [2020-10-14 00:51:11,978 INFO L78 Accepts]: Start accepts. Automaton has 11185 states and 15479 transitions. Word has length 225 [2020-10-14 00:51:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:11,979 INFO L479 AbstractCegarLoop]: Abstraction has 11185 states and 15479 transitions. [2020-10-14 00:51:11,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:51:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 11185 states and 15479 transitions. [2020-10-14 00:51:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 00:51:12,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:12,008 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:12,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:51:12,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:12,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1821618277, now seen corresponding path program 1 times [2020-10-14 00:51:12,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:12,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426578861] [2020-10-14 00:51:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:13,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 00:51:13,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-14 00:51:13,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:13,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:51:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:51:13,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:13,738 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:13,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:13,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:51:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:13,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:13,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:13,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:51:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:51:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:51:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:51:14,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426578861] [2020-10-14 00:51:14,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:14,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:14,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323017020] [2020-10-14 00:51:14,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:14,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:14,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:14,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:14,037 INFO L87 Difference]: Start difference. First operand 11185 states and 15479 transitions. Second operand 7 states. [2020-10-14 00:51:14,277 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:51:14,519 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:18,383 INFO L93 Difference]: Finished difference Result 27554 states and 42552 transitions. [2020-10-14 00:51:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:18,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-14 00:51:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:18,452 INFO L225 Difference]: With dead ends: 27554 [2020-10-14 00:51:18,452 INFO L226 Difference]: Without dead ends: 17017 [2020-10-14 00:51:18,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17017 states. [2020-10-14 00:51:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17017 to 16428. [2020-10-14 00:51:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16428 states. [2020-10-14 00:51:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16428 states to 16428 states and 22179 transitions. [2020-10-14 00:51:18,985 INFO L78 Accepts]: Start accepts. Automaton has 16428 states and 22179 transitions. Word has length 228 [2020-10-14 00:51:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:18,985 INFO L479 AbstractCegarLoop]: Abstraction has 16428 states and 22179 transitions. [2020-10-14 00:51:18,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 16428 states and 22179 transitions. [2020-10-14 00:51:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 00:51:19,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:19,026 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:19,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:51:19,027 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash -30954944, now seen corresponding path program 1 times [2020-10-14 00:51:19,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:19,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431495852] [2020-10-14 00:51:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:24,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:24,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 00:51:24,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:51:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:51:24,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:24,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 00:51:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:51:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:24,237 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:24,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:51:24,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:24,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:24,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:24,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:51:24,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:51:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:24,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:51:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:51:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:24,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:51:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 00:51:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:51:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:51:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 00:51:24,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431495852] [2020-10-14 00:51:24,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:24,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:24,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653872794] [2020-10-14 00:51:24,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:24,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:24,506 INFO L87 Difference]: Start difference. First operand 16428 states and 22179 transitions. Second operand 7 states. [2020-10-14 00:51:24,925 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:25,265 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:31,230 INFO L93 Difference]: Finished difference Result 61612 states and 95825 transitions. [2020-10-14 00:51:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:31,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 00:51:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:31,516 INFO L225 Difference]: With dead ends: 61612 [2020-10-14 00:51:31,517 INFO L226 Difference]: Without dead ends: 46330 [2020-10-14 00:51:31,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46330 states. [2020-10-14 00:51:34,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46330 to 45139. [2020-10-14 00:51:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45139 states. [2020-10-14 00:51:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45139 states to 45139 states and 63778 transitions. [2020-10-14 00:51:34,222 INFO L78 Accepts]: Start accepts. Automaton has 45139 states and 63778 transitions. Word has length 232 [2020-10-14 00:51:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:34,223 INFO L479 AbstractCegarLoop]: Abstraction has 45139 states and 63778 transitions. [2020-10-14 00:51:34,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 45139 states and 63778 transitions. [2020-10-14 00:51:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 00:51:34,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:34,345 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:34,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:51:34,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 941144266, now seen corresponding path program 1 times [2020-10-14 00:51:34,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:34,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708724933] [2020-10-14 00:51:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:38,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 00:51:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4356 [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 00:51:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:51:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:39,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:51:39,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:51:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:51:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:39,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:51:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 00:51:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:39,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:51:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 00:51:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:39,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:51:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:51:39,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708724933] [2020-10-14 00:51:39,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:39,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:51:39,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872330521] [2020-10-14 00:51:39,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:51:39,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:39,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:51:39,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:51:39,253 INFO L87 Difference]: Start difference. First operand 45139 states and 63778 transitions. Second operand 8 states. [2020-10-14 00:51:39,386 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:40,609 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:51:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:42,766 INFO L93 Difference]: Finished difference Result 115331 states and 167991 transitions. [2020-10-14 00:51:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:51:42,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 234 [2020-10-14 00:51:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:43,070 INFO L225 Difference]: With dead ends: 115331 [2020-10-14 00:51:43,070 INFO L226 Difference]: Without dead ends: 71344 [2020-10-14 00:51:43,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:51:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71344 states. [2020-10-14 00:51:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71344 to 70819. [2020-10-14 00:51:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70819 states. [2020-10-14 00:51:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70819 states to 70819 states and 100569 transitions. [2020-10-14 00:51:46,233 INFO L78 Accepts]: Start accepts. Automaton has 70819 states and 100569 transitions. Word has length 234 [2020-10-14 00:51:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:46,233 INFO L479 AbstractCegarLoop]: Abstraction has 70819 states and 100569 transitions. [2020-10-14 00:51:46,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:51:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 70819 states and 100569 transitions. [2020-10-14 00:51:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 00:51:46,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:46,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:46,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:51:46,342 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash -832485520, now seen corresponding path program 1 times [2020-10-14 00:51:46,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:46,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999739134] [2020-10-14 00:51:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3561 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 00:51:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:51:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:50,093 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:51:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:51:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:50,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:51:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:51:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:51:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:51:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:50,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:50,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:51:50,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999739134] [2020-10-14 00:51:50,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:50,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:50,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935970485] [2020-10-14 00:51:50,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:50,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:50,390 INFO L87 Difference]: Start difference. First operand 70819 states and 100569 transitions. Second operand 7 states. [2020-10-14 00:51:50,710 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:51:51,068 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-10-14 00:51:51,261 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:51:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:57,517 INFO L93 Difference]: Finished difference Result 215706 states and 353935 transitions. [2020-10-14 00:51:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:57,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 00:51:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:58,367 INFO L225 Difference]: With dead ends: 215706 [2020-10-14 00:51:58,367 INFO L226 Difference]: Without dead ends: 145797 [2020-10-14 00:51:58,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145797 states. [2020-10-14 00:52:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145797 to 141012. [2020-10-14 00:52:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141012 states. [2020-10-14 00:52:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141012 states to 141012 states and 197172 transitions. [2020-10-14 00:52:05,331 INFO L78 Accepts]: Start accepts. Automaton has 141012 states and 197172 transitions. Word has length 237 [2020-10-14 00:52:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:05,332 INFO L479 AbstractCegarLoop]: Abstraction has 141012 states and 197172 transitions. [2020-10-14 00:52:05,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 141012 states and 197172 transitions. [2020-10-14 00:52:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 00:52:05,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:05,481 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:52:05,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:52:05,483 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:05,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1914903355, now seen corresponding path program 1 times [2020-10-14 00:52:05,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:05,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405702791] [2020-10-14 00:52:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:10,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:10,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 00:52:10,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:52:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-14 00:52:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:10,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:52:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:52:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:10,780 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:10,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:10,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:10,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:10,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:52:10,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:52:10,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:10,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:52:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:52:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:52:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:52:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:11,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:52:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:11,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:11,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:52:11,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:11,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:52:11,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405702791] [2020-10-14 00:52:11,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:11,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:11,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991867740] [2020-10-14 00:52:11,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:11,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:11,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:11,083 INFO L87 Difference]: Start difference. First operand 141012 states and 197172 transitions. Second operand 7 states. [2020-10-14 00:52:11,210 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:11,804 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:52:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:15,015 INFO L93 Difference]: Finished difference Result 280542 states and 398425 transitions. [2020-10-14 00:52:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:52:15,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 00:52:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:16,472 INFO L225 Difference]: With dead ends: 280542 [2020-10-14 00:52:16,472 INFO L226 Difference]: Without dead ends: 140872 [2020-10-14 00:52:16,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:52:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140872 states. [2020-10-14 00:52:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140872 to 139991. [2020-10-14 00:52:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139991 states. [2020-10-14 00:52:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139991 states to 139991 states and 184696 transitions. [2020-10-14 00:52:23,415 INFO L78 Accepts]: Start accepts. Automaton has 139991 states and 184696 transitions. Word has length 260 [2020-10-14 00:52:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:23,415 INFO L479 AbstractCegarLoop]: Abstraction has 139991 states and 184696 transitions. [2020-10-14 00:52:23,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 139991 states and 184696 transitions. [2020-10-14 00:52:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 00:52:23,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:23,548 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:52:23,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:52:23,549 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash -968394567, now seen corresponding path program 1 times [2020-10-14 00:52:23,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:23,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948859495] [2020-10-14 00:52:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:27,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 00:52:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:52:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:52:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:28,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:52:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:52:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:52:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:28,796 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:28,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:28,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:28,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:28,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:28,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:52:28,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:52:28,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:52:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:52:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:52:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:52:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:29,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:52:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 00:52:29,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:29,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:52:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:52:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:52:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:29,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:29,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:29,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:52:29,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:29,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:52:29,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:29,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:52:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:52:29,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948859495] [2020-10-14 00:52:29,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:29,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:52:29,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21879335] [2020-10-14 00:52:29,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:52:29,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:29,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:52:29,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:52:29,294 INFO L87 Difference]: Start difference. First operand 139991 states and 184696 transitions. Second operand 10 states. [2020-10-14 00:52:29,685 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:30,013 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-14 00:52:30,868 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-14 00:52:31,832 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:52:33,298 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-10-14 00:52:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:41,538 INFO L93 Difference]: Finished difference Result 343870 states and 513430 transitions. [2020-10-14 00:52:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:52:41,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 272 [2020-10-14 00:52:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:42,393 INFO L225 Difference]: With dead ends: 343870 [2020-10-14 00:52:42,393 INFO L226 Difference]: Without dead ends: 204996 [2020-10-14 00:52:42,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:52:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204996 states. [2020-10-14 00:52:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204996 to 197329. [2020-10-14 00:52:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197329 states. [2020-10-14 00:52:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197329 states to 197329 states and 256760 transitions. [2020-10-14 00:52:51,456 INFO L78 Accepts]: Start accepts. Automaton has 197329 states and 256760 transitions. Word has length 272 [2020-10-14 00:52:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:51,456 INFO L479 AbstractCegarLoop]: Abstraction has 197329 states and 256760 transitions. [2020-10-14 00:52:51,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:52:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 197329 states and 256760 transitions. [2020-10-14 00:52:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 00:52:51,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:51,619 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:52:51,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:52:51,620 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1527474302, now seen corresponding path program 1 times [2020-10-14 00:52:51,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:51,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605993652] [2020-10-14 00:52:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:56,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 00:52:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:52:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:52:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:56,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:52:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:52:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:56,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:52:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:56,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:56,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:52:56,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:56,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 00:52:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:56,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:57,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:57,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:52:57,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:52:57,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:52:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:57,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:52:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:52:59,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605993652] [2020-10-14 00:52:59,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:59,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:59,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189814277] [2020-10-14 00:52:59,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:59,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:59,821 INFO L87 Difference]: Start difference. First operand 197329 states and 256760 transitions. Second operand 7 states. [2020-10-14 00:53:00,116 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:53:01,744 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:53:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:06,581 INFO L93 Difference]: Finished difference Result 407843 states and 564560 transitions. [2020-10-14 00:53:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:53:06,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 00:53:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:07,418 INFO L225 Difference]: With dead ends: 407843 [2020-10-14 00:53:07,418 INFO L226 Difference]: Without dead ends: 211883 [2020-10-14 00:53:07,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211883 states. [2020-10-14 00:53:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211883 to 206370. [2020-10-14 00:53:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206370 states. [2020-10-14 00:53:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206370 states to 206370 states and 258962 transitions. [2020-10-14 00:53:12,724 INFO L78 Accepts]: Start accepts. Automaton has 206370 states and 258962 transitions. Word has length 275 [2020-10-14 00:53:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:12,725 INFO L479 AbstractCegarLoop]: Abstraction has 206370 states and 258962 transitions. [2020-10-14 00:53:12,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 206370 states and 258962 transitions. [2020-10-14 00:53:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 00:53:12,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:12,874 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:53:12,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:53:12,874 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:12,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1047673731, now seen corresponding path program 1 times [2020-10-14 00:53:12,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:12,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716481054] [2020-10-14 00:53:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 00:53:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:53:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:53:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,111 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:18,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:53:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:53:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:53:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:53:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:53:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:53:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:53:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 125 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 00:53:18,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716481054] [2020-10-14 00:53:18,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:18,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:18,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590229590] [2020-10-14 00:53:18,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:18,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:18,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:18,425 INFO L87 Difference]: Start difference. First operand 206370 states and 258962 transitions. Second operand 7 states. [2020-10-14 00:53:18,554 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:53:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:30,021 INFO L93 Difference]: Finished difference Result 546549 states and 713074 transitions. [2020-10-14 00:53:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:53:30,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 00:53:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:31,089 INFO L225 Difference]: With dead ends: 546549 [2020-10-14 00:53:31,089 INFO L226 Difference]: Without dead ends: 341758 [2020-10-14 00:53:31,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341758 states.