/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:53:19,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:53:19,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:53:19,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:53:19,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:53:19,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:53:19,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:53:19,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:53:19,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:53:19,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:53:19,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:53:19,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:53:19,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:53:19,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:53:19,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:53:19,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:53:19,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:53:19,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:53:19,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:53:19,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:53:19,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:53:19,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:53:19,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:53:19,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:53:19,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:53:19,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:53:19,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:53:19,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:53:19,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:53:19,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:53:19,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:53:19,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:53:19,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:53:19,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:53:19,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:53:19,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:53:19,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:53:19,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:53:19,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:53:19,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:53:19,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:53:19,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:53:19,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:53:19,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:53:19,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:53:19,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:53:19,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:53:19,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:53:19,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:53:19,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:53:19,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:53:19,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:53:19,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:53:19,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:53:19,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:53:19,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:53:19,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:53:19,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:53:19,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:53:19,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:53:19,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:53:19,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:53:19,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:53:19,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:53:19,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:53:19,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:53:19,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:53:19,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:53:19,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:53:19,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:53:19,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:53:19,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:53:19,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:53:19,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:53:19,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:53:19,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:53:19,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:53:19,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-14 00:53:19,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63704dd3/349e179525ff4aedb496e736111b7217/FLAG3d9f4886b [2020-10-14 00:53:20,342 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:53:20,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label37.c [2020-10-14 00:53:20,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63704dd3/349e179525ff4aedb496e736111b7217/FLAG3d9f4886b [2020-10-14 00:53:20,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a63704dd3/349e179525ff4aedb496e736111b7217 [2020-10-14 00:53:20,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:53:20,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:53:20,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:53:20,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:53:20,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:53:20,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:20" (1/1) ... [2020-10-14 00:53:20,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f284b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:20, skipping insertion in model container [2020-10-14 00:53:20,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:53:20" (1/1) ... [2020-10-14 00:53:20,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:53:20,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:53:21,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:53:21,455 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:53:21,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:53:21,850 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:53:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21 WrapperNode [2020-10-14 00:53:21,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:53:21,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:53:21,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:53:21,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:53:21,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:21,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:21,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:21,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:21,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:22,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:22,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... [2020-10-14 00:53:22,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:53:22,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:53:22,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:53:22,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:53:22,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:53:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:53:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:53:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:53:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:53:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:53:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:53:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:53:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:53:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:53:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:53:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:53:24,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:53:24,025 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:53:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:53:24 BoogieIcfgContainer [2020-10-14 00:53:24,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:53:24,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:53:24,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:53:24,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:53:24,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:53:20" (1/3) ... [2020-10-14 00:53:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:53:24, skipping insertion in model container [2020-10-14 00:53:24,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:53:21" (2/3) ... [2020-10-14 00:53:24,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:53:24, skipping insertion in model container [2020-10-14 00:53:24,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:53:24" (3/3) ... [2020-10-14 00:53:24,041 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label37.c [2020-10-14 00:53:24,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:53:24,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:53:24,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:53:24,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:53:24,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:53:24,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:53:24,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:53:24,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:53:24,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:53:24,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:53:24,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:53:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:53:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 00:53:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:24,148 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] [2020-10-14 00:53:24,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:24,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1032211664, now seen corresponding path program 1 times [2020-10-14 00:53:24,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:24,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730054578] [2020-10-14 00:53:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 00:53:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:53:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-14 00:53:28,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:28,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:53:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:53:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 00:53:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:53:29,091 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:29,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:29,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:29,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:53:29,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:29,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:53:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:29,176 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 00:53:29,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730054578] [2020-10-14 00:53:29,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:53:29,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:53:29,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778842461] [2020-10-14 00:53:29,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:53:29,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:53:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:53:29,205 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:53:29,405 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:53:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:31,969 INFO L93 Difference]: Finished difference Result 886 states and 1538 transitions. [2020-10-14 00:53:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:53:31,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-10-14 00:53:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:31,999 INFO L225 Difference]: With dead ends: 886 [2020-10-14 00:53:32,000 INFO L226 Difference]: Without dead ends: 482 [2020-10-14 00:53:32,008 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 00:53:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-14 00:53:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 476. [2020-10-14 00:53:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-14 00:53:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 724 transitions. [2020-10-14 00:53:32,096 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 724 transitions. Word has length 155 [2020-10-14 00:53:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:32,097 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 724 transitions. [2020-10-14 00:53:32,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:53:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 724 transitions. [2020-10-14 00:53:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 00:53:32,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:32,104 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:53:32,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:53:32,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:32,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:32,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1492195356, now seen corresponding path program 1 times [2020-10-14 00:53:32,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:32,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396840267] [2020-10-14 00:53:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 00:53:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:53:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2660 [2020-10-14 00:53:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:34,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:53:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:53:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:35,080 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:35,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:53:35,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:35,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:35,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:35,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:35,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:53:35,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:53:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:35,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:53:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:53:35,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396840267] [2020-10-14 00:53:35,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:35,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:53:35,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560038232] [2020-10-14 00:53:35,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:53:35,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:53:35,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:53:35,291 INFO L87 Difference]: Start difference. First operand 476 states and 724 transitions. Second operand 5 states. [2020-10-14 00:53:35,621 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:53:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:38,507 INFO L93 Difference]: Finished difference Result 1383 states and 2137 transitions. [2020-10-14 00:53:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:53:38,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-14 00:53:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:38,515 INFO L225 Difference]: With dead ends: 1383 [2020-10-14 00:53:38,515 INFO L226 Difference]: Without dead ends: 913 [2020-10-14 00:53:38,518 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 00:53:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-14 00:53:38,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 896. [2020-10-14 00:53:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-14 00:53:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1350 transitions. [2020-10-14 00:53:38,585 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1350 transitions. Word has length 167 [2020-10-14 00:53:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:38,586 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1350 transitions. [2020-10-14 00:53:38,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:53:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1350 transitions. [2020-10-14 00:53:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 00:53:38,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:38,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:38,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:53:38,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1922297015, now seen corresponding path program 1 times [2020-10-14 00:53:38,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:38,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748393824] [2020-10-14 00:53:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:40,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:40,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 00:53:40,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:53:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-14 00:53:40,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:40,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:53:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:53:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 00:53:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:40,795 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:40,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:40,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:40,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:40,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:53:40,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:40,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:53:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:41,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:53:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:53:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:53:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:41,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:53:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:53:41,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748393824] [2020-10-14 00:53:41,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:41,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:53:41,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256377474] [2020-10-14 00:53:41,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:53:41,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:53:41,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:53:41,100 INFO L87 Difference]: Start difference. First operand 896 states and 1350 transitions. Second operand 6 states. [2020-10-14 00:53:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:43,943 INFO L93 Difference]: Finished difference Result 2672 states and 4163 transitions. [2020-10-14 00:53:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:53:43,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-14 00:53:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:43,966 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 00:53:43,966 INFO L226 Difference]: Without dead ends: 1782 [2020-10-14 00:53:43,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:53:43,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-10-14 00:53:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1761. [2020-10-14 00:53:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-10-14 00:53:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2567 transitions. [2020-10-14 00:53:44,069 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2567 transitions. Word has length 182 [2020-10-14 00:53:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:44,070 INFO L479 AbstractCegarLoop]: Abstraction has 1761 states and 2567 transitions. [2020-10-14 00:53:44,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:53:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2567 transitions. [2020-10-14 00:53:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 00:53:44,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:44,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:44,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:53:44,085 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1539429915, now seen corresponding path program 1 times [2020-10-14 00:53:44,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:44,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690047435] [2020-10-14 00:53:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 00:53:49,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:53:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:53:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:49,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 00:53:49,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:53:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:49,525 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:49,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:53:49,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:49,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:53:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:49,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:53:49,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:53:49,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:49,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:53:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:53:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:53:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 00:53:49,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:49,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:53:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:53:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:53:50,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690047435] [2020-10-14 00:53:50,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:50,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:53:50,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143490570] [2020-10-14 00:53:50,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:53:50,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:53:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:53:50,049 INFO L87 Difference]: Start difference. First operand 1761 states and 2567 transitions. Second operand 5 states. [2020-10-14 00:53:50,174 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:53:53,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:53,094 INFO L93 Difference]: Finished difference Result 4361 states and 6491 transitions. [2020-10-14 00:53:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:53:53,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 00:53:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:53,111 INFO L225 Difference]: With dead ends: 4361 [2020-10-14 00:53:53,111 INFO L226 Difference]: Without dead ends: 2606 [2020-10-14 00:53:53,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 00:53:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2020-10-14 00:53:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2600. [2020-10-14 00:53:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-10-14 00:53:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3746 transitions. [2020-10-14 00:53:53,233 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3746 transitions. Word has length 190 [2020-10-14 00:53:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:53,234 INFO L479 AbstractCegarLoop]: Abstraction has 2600 states and 3746 transitions. [2020-10-14 00:53:53,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:53:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3746 transitions. [2020-10-14 00:53:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 00:53:53,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:53,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:53,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:53:53,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:53,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1277754077, now seen corresponding path program 1 times [2020-10-14 00:53:53,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:53,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838210837] [2020-10-14 00:53:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 00:53:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:53:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4660 [2020-10-14 00:53:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:57,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:53:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:53:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:58,131 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:58,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:53:58,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:58,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:58,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:53:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:53:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:58,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:53:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:53:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:53:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 00:53:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:58,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:53:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:53:58,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838210837] [2020-10-14 00:53:58,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:58,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:58,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817415118] [2020-10-14 00:53:58,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:58,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:58,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:58,434 INFO L87 Difference]: Start difference. First operand 2600 states and 3746 transitions. Second operand 7 states. [2020-10-14 00:53:58,713 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:53:59,780 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:01,775 INFO L93 Difference]: Finished difference Result 5327 states and 8131 transitions. [2020-10-14 00:54:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:54:01,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-14 00:54:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:01,807 INFO L225 Difference]: With dead ends: 5327 [2020-10-14 00:54:01,808 INFO L226 Difference]: Without dead ends: 2733 [2020-10-14 00:54:01,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:54:01,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2020-10-14 00:54:01,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2636. [2020-10-14 00:54:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2636 states. [2020-10-14 00:54:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3628 transitions. [2020-10-14 00:54:01,980 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3628 transitions. Word has length 194 [2020-10-14 00:54:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:01,980 INFO L479 AbstractCegarLoop]: Abstraction has 2636 states and 3628 transitions. [2020-10-14 00:54:01,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3628 transitions. [2020-10-14 00:54:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 00:54:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:01,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:01,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:54:01,992 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash 295884927, now seen corresponding path program 1 times [2020-10-14 00:54:01,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:01,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767110703] [2020-10-14 00:54:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:06,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 00:54:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:54:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:06,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:06,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:06,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:54:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:06,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:06,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:54:06,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:54:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:54:06,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767110703] [2020-10-14 00:54:06,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:06,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:06,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356399069] [2020-10-14 00:54:06,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:06,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:06,879 INFO L87 Difference]: Start difference. First operand 2636 states and 3628 transitions. Second operand 5 states. [2020-10-14 00:54:07,107 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:09,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:09,612 INFO L93 Difference]: Finished difference Result 7833 states and 11076 transitions. [2020-10-14 00:54:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:09,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 00:54:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:09,637 INFO L225 Difference]: With dead ends: 7833 [2020-10-14 00:54:09,638 INFO L226 Difference]: Without dead ends: 5203 [2020-10-14 00:54:09,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2020-10-14 00:54:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5192. [2020-10-14 00:54:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5192 states. [2020-10-14 00:54:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 6710 transitions. [2020-10-14 00:54:09,800 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 6710 transitions. Word has length 195 [2020-10-14 00:54:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:09,800 INFO L479 AbstractCegarLoop]: Abstraction has 5192 states and 6710 transitions. [2020-10-14 00:54:09,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 6710 transitions. [2020-10-14 00:54:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 00:54:09,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:09,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:09,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:54:09,818 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:09,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1053009058, now seen corresponding path program 1 times [2020-10-14 00:54:09,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:09,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094172968] [2020-10-14 00:54:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:11,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:11,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 00:54:11,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-14 00:54:11,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:11,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:54:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:54:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:11,528 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:11,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:11,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:11,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:11,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:11,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:11,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:11,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:54:11,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 00:54:11,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:11,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:54:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:54:11,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094172968] [2020-10-14 00:54:11,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:11,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:54:11,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690428483] [2020-10-14 00:54:11,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:54:11,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:54:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:54:11,831 INFO L87 Difference]: Start difference. First operand 5192 states and 6710 transitions. Second operand 5 states. [2020-10-14 00:54:12,104 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:14,758 INFO L93 Difference]: Finished difference Result 15466 states and 20415 transitions. [2020-10-14 00:54:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:14,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-14 00:54:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:14,809 INFO L225 Difference]: With dead ends: 15466 [2020-10-14 00:54:14,809 INFO L226 Difference]: Without dead ends: 10280 [2020-10-14 00:54:14,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2020-10-14 00:54:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 10253. [2020-10-14 00:54:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10253 states. [2020-10-14 00:54:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10253 states to 10253 states and 13304 transitions. [2020-10-14 00:54:15,145 INFO L78 Accepts]: Start accepts. Automaton has 10253 states and 13304 transitions. Word has length 200 [2020-10-14 00:54:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:15,146 INFO L479 AbstractCegarLoop]: Abstraction has 10253 states and 13304 transitions. [2020-10-14 00:54:15,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:54:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10253 states and 13304 transitions. [2020-10-14 00:54:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 00:54:15,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:15,183 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 00:54:15,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:54:15,184 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash 221080850, now seen corresponding path program 1 times [2020-10-14 00:54:15,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:15,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833849810] [2020-10-14 00:54:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 00:54:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,403 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:54:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:54:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:54:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:54:20,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:54:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:54:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 00:54:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:54:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:54:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:20,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:54:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:20,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-14 00:54:20,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833849810] [2020-10-14 00:54:20,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:20,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:54:20,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623920185] [2020-10-14 00:54:20,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:54:20,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:20,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:54:20,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:54:20,702 INFO L87 Difference]: Start difference. First operand 10253 states and 13304 transitions. Second operand 6 states. [2020-10-14 00:54:20,883 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:22,582 INFO L93 Difference]: Finished difference Result 20517 states and 26655 transitions. [2020-10-14 00:54:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:54:22,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-14 00:54:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:22,622 INFO L225 Difference]: With dead ends: 20517 [2020-10-14 00:54:22,622 INFO L226 Difference]: Without dead ends: 10270 [2020-10-14 00:54:22,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2020-10-14 00:54:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 10252. [2020-10-14 00:54:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10252 states. [2020-10-14 00:54:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10252 states to 10252 states and 13302 transitions. [2020-10-14 00:54:22,887 INFO L78 Accepts]: Start accepts. Automaton has 10252 states and 13302 transitions. Word has length 228 [2020-10-14 00:54:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:22,887 INFO L479 AbstractCegarLoop]: Abstraction has 10252 states and 13302 transitions. [2020-10-14 00:54:22,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:54:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10252 states and 13302 transitions. [2020-10-14 00:54:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 00:54:22,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:22,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:54:22,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:54:22,920 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1377651564, now seen corresponding path program 1 times [2020-10-14 00:54:22,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707036381] [2020-10-14 00:54:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:26,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 00:54:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:54:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3224 [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:54:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:26,340 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:26,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:26,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:26,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:54:26,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:26,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:26,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:54:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:54:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:26,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:26,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:54:26,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:54:26,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707036381] [2020-10-14 00:54:26,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:26,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:26,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784301448] [2020-10-14 00:54:26,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:26,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:26,692 INFO L87 Difference]: Start difference. First operand 10252 states and 13302 transitions. Second operand 7 states. [2020-10-14 00:54:26,993 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:29,243 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:54:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:30,705 INFO L93 Difference]: Finished difference Result 28081 states and 40144 transitions. [2020-10-14 00:54:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:54:30,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-14 00:54:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:30,829 INFO L225 Difference]: With dead ends: 28081 [2020-10-14 00:54:30,829 INFO L226 Difference]: Without dead ends: 17835 [2020-10-14 00:54:30,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:54:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17835 states. [2020-10-14 00:54:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17835 to 17398. [2020-10-14 00:54:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17398 states. [2020-10-14 00:54:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17398 states to 17398 states and 22852 transitions. [2020-10-14 00:54:31,409 INFO L78 Accepts]: Start accepts. Automaton has 17398 states and 22852 transitions. Word has length 230 [2020-10-14 00:54:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:31,409 INFO L479 AbstractCegarLoop]: Abstraction has 17398 states and 22852 transitions. [2020-10-14 00:54:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 17398 states and 22852 transitions. [2020-10-14 00:54:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 00:54:31,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:31,464 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:54:31,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:54:31,464 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:31,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1967443182, now seen corresponding path program 1 times [2020-10-14 00:54:31,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:31,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237109858] [2020-10-14 00:54:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 00:54:36,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:54:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 00:54:36,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 00:54:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:54:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:54:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:54:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:54:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:54:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:36,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:36,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 00:54:36,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:36,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:54:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:54:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 00:54:37,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237109858] [2020-10-14 00:54:37,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:37,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:37,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637967821] [2020-10-14 00:54:37,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:37,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:37,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:37,060 INFO L87 Difference]: Start difference. First operand 17398 states and 22852 transitions. Second operand 7 states. [2020-10-14 00:54:37,391 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:54:37,540 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:41,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:41,799 INFO L93 Difference]: Finished difference Result 40110 states and 57064 transitions. [2020-10-14 00:54:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:54:41,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-14 00:54:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:41,896 INFO L225 Difference]: With dead ends: 40110 [2020-10-14 00:54:41,897 INFO L226 Difference]: Without dead ends: 22718 [2020-10-14 00:54:41,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:54:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22718 states. [2020-10-14 00:54:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22718 to 22267. [2020-10-14 00:54:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22267 states. [2020-10-14 00:54:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22267 states to 22267 states and 29293 transitions. [2020-10-14 00:54:42,562 INFO L78 Accepts]: Start accepts. Automaton has 22267 states and 29293 transitions. Word has length 235 [2020-10-14 00:54:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:42,562 INFO L479 AbstractCegarLoop]: Abstraction has 22267 states and 29293 transitions. [2020-10-14 00:54:42,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 22267 states and 29293 transitions. [2020-10-14 00:54:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 00:54:42,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:42,613 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 00:54:42,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:54:42,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:42,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1892506794, now seen corresponding path program 1 times [2020-10-14 00:54:42,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:42,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490557413] [2020-10-14 00:54:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 00:54:47,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:54:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:54:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:54:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:54:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:47,841 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:54:47,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:47,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:54:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:54:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:54:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:54:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:54:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:54:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:54:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:54:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:54:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:54:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 104 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 00:54:48,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490557413] [2020-10-14 00:54:48,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:48,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:54:48,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528289221] [2020-10-14 00:54:48,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:48,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:48,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:48,172 INFO L87 Difference]: Start difference. First operand 22267 states and 29293 transitions. Second operand 7 states. [2020-10-14 00:54:48,302 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:51,108 INFO L93 Difference]: Finished difference Result 63381 states and 86542 transitions. [2020-10-14 00:54:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:54:51,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 00:54:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:51,243 INFO L225 Difference]: With dead ends: 63381 [2020-10-14 00:54:51,244 INFO L226 Difference]: Without dead ends: 42362 [2020-10-14 00:54:51,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:54:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42362 states. [2020-10-14 00:54:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42362 to 41953. [2020-10-14 00:54:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41953 states. [2020-10-14 00:54:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41953 states to 41953 states and 55365 transitions. [2020-10-14 00:54:52,347 INFO L78 Accepts]: Start accepts. Automaton has 41953 states and 55365 transitions. Word has length 256 [2020-10-14 00:54:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:54:52,347 INFO L479 AbstractCegarLoop]: Abstraction has 41953 states and 55365 transitions. [2020-10-14 00:54:52,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:54:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 41953 states and 55365 transitions. [2020-10-14 00:54:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 00:54:52,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:54:52,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:54:52,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:54:52,399 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:54:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:54:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1991543797, now seen corresponding path program 1 times [2020-10-14 00:54:52,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:54:52,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026790969] [2020-10-14 00:54:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:54:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:54:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:54:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 00:54:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:53,983 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:54:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:54:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:53,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:53,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:54:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:54:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:53,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:54:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:54:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:54:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:54:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:54:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 00:54:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:54:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:54:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:54:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:54:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:54:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 00:54:55,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026790969] [2020-10-14 00:54:55,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:54:55,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:54:55,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444911798] [2020-10-14 00:54:55,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:54:55,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:54:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:54:55,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:54:55,464 INFO L87 Difference]: Start difference. First operand 41953 states and 55365 transitions. Second operand 7 states. [2020-10-14 00:54:55,597 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:56,493 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:54:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:54:58,808 INFO L93 Difference]: Finished difference Result 93385 states and 127501 transitions. [2020-10-14 00:54:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:54:58,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 00:54:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:54:58,993 INFO L225 Difference]: With dead ends: 93385 [2020-10-14 00:54:58,993 INFO L226 Difference]: Without dead ends: 52660 [2020-10-14 00:54:59,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 00:54:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52660 states. [2020-10-14 00:55:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52660 to 52328. [2020-10-14 00:55:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52328 states. [2020-10-14 00:55:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52328 states to 52328 states and 66891 transitions. [2020-10-14 00:55:00,204 INFO L78 Accepts]: Start accepts. Automaton has 52328 states and 66891 transitions. Word has length 258 [2020-10-14 00:55:00,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:00,204 INFO L479 AbstractCegarLoop]: Abstraction has 52328 states and 66891 transitions. [2020-10-14 00:55:00,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 52328 states and 66891 transitions. [2020-10-14 00:55:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 00:55:00,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:00,266 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:00,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:55:00,266 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:00,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1967973985, now seen corresponding path program 1 times [2020-10-14 00:55:00,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:00,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156220103] [2020-10-14 00:55:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 00:55:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,487 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:05,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:55:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:55:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:55:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:05,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:55:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:55:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:55:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:55:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:05,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 145 proven. 40 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 00:55:05,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156220103] [2020-10-14 00:55:05,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:05,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:05,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060975227] [2020-10-14 00:55:05,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:05,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:05,930 INFO L87 Difference]: Start difference. First operand 52328 states and 66891 transitions. Second operand 7 states. [2020-10-14 00:55:06,169 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:55:07,123 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:09,703 INFO L93 Difference]: Finished difference Result 111705 states and 149032 transitions. [2020-10-14 00:55:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:55:09,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-14 00:55:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:09,868 INFO L225 Difference]: With dead ends: 111705 [2020-10-14 00:55:09,868 INFO L226 Difference]: Without dead ends: 60600 [2020-10-14 00:55:09,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:55:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60600 states. [2020-10-14 00:55:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60600 to 59662. [2020-10-14 00:55:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59662 states. [2020-10-14 00:55:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59662 states to 59662 states and 74048 transitions. [2020-10-14 00:55:11,068 INFO L78 Accepts]: Start accepts. Automaton has 59662 states and 74048 transitions. Word has length 273 [2020-10-14 00:55:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:11,068 INFO L479 AbstractCegarLoop]: Abstraction has 59662 states and 74048 transitions. [2020-10-14 00:55:11,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 59662 states and 74048 transitions. [2020-10-14 00:55:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 00:55:11,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:11,109 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:11,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:55:11,109 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash -877689846, now seen corresponding path program 1 times [2020-10-14 00:55:11,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:11,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547107477] [2020-10-14 00:55:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 00:55:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 00:55:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,443 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:14,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:14,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:55:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:55:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:55:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 00:55:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:55:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 00:55:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:14,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 170 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 00:55:14,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547107477] [2020-10-14 00:55:14,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:14,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:14,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248343347] [2020-10-14 00:55:14,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:14,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:14,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:14,867 INFO L87 Difference]: Start difference. First operand 59662 states and 74048 transitions. Second operand 7 states. [2020-10-14 00:55:15,159 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:16,611 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:55:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:20,569 INFO L93 Difference]: Finished difference Result 131678 states and 172159 transitions. [2020-10-14 00:55:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:20,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-14 00:55:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:20,765 INFO L225 Difference]: With dead ends: 131678 [2020-10-14 00:55:20,765 INFO L226 Difference]: Without dead ends: 73270 [2020-10-14 00:55:20,840 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 00:55:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73270 states. [2020-10-14 00:55:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73270 to 70449. [2020-10-14 00:55:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70449 states. [2020-10-14 00:55:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70449 states to 70449 states and 85820 transitions. [2020-10-14 00:55:22,232 INFO L78 Accepts]: Start accepts. Automaton has 70449 states and 85820 transitions. Word has length 297 [2020-10-14 00:55:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:22,232 INFO L479 AbstractCegarLoop]: Abstraction has 70449 states and 85820 transitions. [2020-10-14 00:55:22,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 70449 states and 85820 transitions. [2020-10-14 00:55:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 00:55:22,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:22,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:22,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:55:22,285 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1513544663, now seen corresponding path program 1 times [2020-10-14 00:55:22,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:22,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674104220] [2020-10-14 00:55:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 00:55:27,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4805 [2020-10-14 00:55:27,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 00:55:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 00:55:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,298 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:27,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:55:27,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:55:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:55:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:55:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:55:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 00:55:27,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:55:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 00:55:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:27,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:55:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:27,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 245 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 00:55:27,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674104220] [2020-10-14 00:55:27,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:27,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:55:27,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093400051] [2020-10-14 00:55:27,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:55:27,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:27,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:55:27,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:55:27,854 INFO L87 Difference]: Start difference. First operand 70449 states and 85820 transitions. Second operand 7 states. [2020-10-14 00:55:28,093 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:28,899 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:55:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:32,274 INFO L93 Difference]: Finished difference Result 145441 states and 186048 transitions. [2020-10-14 00:55:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:55:32,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-14 00:55:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:32,509 INFO L225 Difference]: With dead ends: 145441 [2020-10-14 00:55:32,509 INFO L226 Difference]: Without dead ends: 76763 [2020-10-14 00:55:32,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:55:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76763 states. [2020-10-14 00:55:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76763 to 75326. [2020-10-14 00:55:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75326 states. [2020-10-14 00:55:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75326 states to 75326 states and 91238 transitions. [2020-10-14 00:55:34,347 INFO L78 Accepts]: Start accepts. Automaton has 75326 states and 91238 transitions. Word has length 335 [2020-10-14 00:55:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:34,348 INFO L479 AbstractCegarLoop]: Abstraction has 75326 states and 91238 transitions. [2020-10-14 00:55:34,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:55:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 75326 states and 91238 transitions. [2020-10-14 00:55:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 00:55:34,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:34,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:34,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:55:34,411 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1804530538, now seen corresponding path program 1 times [2020-10-14 00:55:34,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:34,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198890609] [2020-10-14 00:55:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 00:55:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 00:55:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:37,460 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:55:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:37,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:55:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:55:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:55:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 00:55:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:37,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 250 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 00:55:38,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198890609] [2020-10-14 00:55:38,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:38,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:55:38,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492604741] [2020-10-14 00:55:38,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:55:38,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:38,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:55:38,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:55:38,272 INFO L87 Difference]: Start difference. First operand 75326 states and 91238 transitions. Second operand 8 states. [2020-10-14 00:55:38,556 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 00:55:38,965 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 00:55:40,056 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 00:55:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:55:46,448 INFO L93 Difference]: Finished difference Result 187726 states and 239622 transitions. [2020-10-14 00:55:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:55:46,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 337 [2020-10-14 00:55:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:55:47,247 INFO L225 Difference]: With dead ends: 187726 [2020-10-14 00:55:47,247 INFO L226 Difference]: Without dead ends: 114590 [2020-10-14 00:55:47,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:55:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114590 states. [2020-10-14 00:55:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114590 to 111535. [2020-10-14 00:55:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111535 states. [2020-10-14 00:55:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111535 states to 111535 states and 132791 transitions. [2020-10-14 00:55:49,074 INFO L78 Accepts]: Start accepts. Automaton has 111535 states and 132791 transitions. Word has length 337 [2020-10-14 00:55:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:55:49,074 INFO L479 AbstractCegarLoop]: Abstraction has 111535 states and 132791 transitions. [2020-10-14 00:55:49,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:55:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 111535 states and 132791 transitions. [2020-10-14 00:55:49,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-14 00:55:49,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:55:49,156 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:55:49,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:55:49,156 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:55:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:55:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1612887359, now seen corresponding path program 1 times [2020-10-14 00:55:49,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:55:49,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541531770] [2020-10-14 00:55:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:55:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6845 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:56,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 00:55:56,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 00:55:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:55:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:56,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:55:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:55:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:55:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:55:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:55:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:55:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:55:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:55:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:55:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-14 00:55:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:55:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:55:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:55:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:55:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:55:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:55:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:55:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 270 proven. 26 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 00:55:56,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541531770] [2020-10-14 00:55:56,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:55:56,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:55:56,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321849599] [2020-10-14 00:55:56,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:55:56,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:55:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:55:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:55:56,698 INFO L87 Difference]: Start difference. First operand 111535 states and 132791 transitions. Second operand 8 states. [2020-10-14 00:55:57,334 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:57,619 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:55:58,404 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:56:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:04,996 INFO L93 Difference]: Finished difference Result 363427 states and 470018 transitions. [2020-10-14 00:56:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:56:04,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-10-14 00:56:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:05,940 INFO L225 Difference]: With dead ends: 363427 [2020-10-14 00:56:05,940 INFO L226 Difference]: Without dead ends: 254369 [2020-10-14 00:56:06,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:56:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254369 states. [2020-10-14 00:56:14,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254369 to 246623. [2020-10-14 00:56:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246623 states. [2020-10-14 00:56:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246623 states to 246623 states and 287895 transitions. [2020-10-14 00:56:15,151 INFO L78 Accepts]: Start accepts. Automaton has 246623 states and 287895 transitions. Word has length 346 [2020-10-14 00:56:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:15,152 INFO L479 AbstractCegarLoop]: Abstraction has 246623 states and 287895 transitions. [2020-10-14 00:56:15,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:56:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 246623 states and 287895 transitions. [2020-10-14 00:56:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 00:56:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:15,294 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:15,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:56:15,294 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash 590341882, now seen corresponding path program 1 times [2020-10-14 00:56:15,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:15,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454990137] [2020-10-14 00:56:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 00:56:20,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 00:56:20,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 00:56:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 00:56:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,567 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:20,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:56:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:56:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:56:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:56:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:56:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 00:56:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:20,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:20,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:56:20,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 273 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 00:56:23,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454990137] [2020-10-14 00:56:23,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:23,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:23,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550052340] [2020-10-14 00:56:23,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:23,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:23,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:23,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:23,795 INFO L87 Difference]: Start difference. First operand 246623 states and 287895 transitions. Second operand 7 states. [2020-10-14 00:56:24,309 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:56:24,671 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:56:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:30,749 INFO L93 Difference]: Finished difference Result 510633 states and 620899 transitions. [2020-10-14 00:56:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:30,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-14 00:56:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:31,665 INFO L225 Difference]: With dead ends: 510633 [2020-10-14 00:56:31,666 INFO L226 Difference]: Without dead ends: 266487 [2020-10-14 00:56:31,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 00:56:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266487 states. [2020-10-14 00:56:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266487 to 261436. [2020-10-14 00:56:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261436 states. [2020-10-14 00:56:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261436 states to 261436 states and 305709 transitions. [2020-10-14 00:56:41,990 INFO L78 Accepts]: Start accepts. Automaton has 261436 states and 305709 transitions. Word has length 347 [2020-10-14 00:56:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:41,991 INFO L479 AbstractCegarLoop]: Abstraction has 261436 states and 305709 transitions. [2020-10-14 00:56:41,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 261436 states and 305709 transitions. [2020-10-14 00:56:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 00:56:42,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:42,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:56:42,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:56:42,127 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:42,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1774048828, now seen corresponding path program 1 times [2020-10-14 00:56:42,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:42,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413215877] [2020-10-14 00:56:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 00:56:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 00:56:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0