/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/Problem17_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:58:11,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:58:11,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:58:11,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:58:11,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:58:11,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:58:11,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:58:11,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:58:11,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:58:11,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:58:11,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:58:11,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:58:11,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:58:11,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:58:11,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:58:11,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:58:11,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:58:11,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:58:11,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:58:11,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:58:11,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:58:11,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:58:11,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:58:11,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:58:11,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:58:11,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:58:11,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:58:11,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:58:11,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:58:11,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:58:11,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:58:11,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:58:11,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:58:11,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:58:11,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:58:11,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:58:11,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:58:11,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:58:11,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:58:11,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:58:11,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:58:11,330 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 03:58:11,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:58:11,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:58:11,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:58:11,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:58:11,355 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:58:11,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:58:11,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:58:11,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:58:11,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:58:11,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:58:11,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:58:11,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:58:11,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:58:11,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:58:11,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:58:11,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:58:11,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:58:11,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:58:11,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:58:11,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:58:11,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:58:11,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:58:11,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:58:11,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:58:11,360 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 03:58:11,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:58:11,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:58:11,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:58:11,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:58:11,708 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:58:11,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-14 03:58:11,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6afcf116e/3d48da1d7f664c91ab6dac32a59de62d/FLAG19d804d34 [2020-10-14 03:58:12,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:58:12,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-14 03:58:12,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6afcf116e/3d48da1d7f664c91ab6dac32a59de62d/FLAG19d804d34 [2020-10-14 03:58:12,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6afcf116e/3d48da1d7f664c91ab6dac32a59de62d [2020-10-14 03:58:12,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:58:12,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:58:12,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:12,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:58:12,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:58:12,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:12" (1/1) ... [2020-10-14 03:58:12,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739c8e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:12, skipping insertion in model container [2020-10-14 03:58:12,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:12" (1/1) ... [2020-10-14 03:58:12,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:58:12,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:58:14,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:14,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:58:14,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:14,512 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:58:14,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14 WrapperNode [2020-10-14 03:58:14,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:14,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:58:14,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:58:14,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:58:14,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (1/1) ... [2020-10-14 03:58:14,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:58:14,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:58:14,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:58:14,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:58:14,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (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 03:58:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:58:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:58:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:58:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:58:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:58:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:58:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:58:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:58:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:58:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:58:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:58:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:58:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:58:21,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:58:21,280 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:58:21,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:21 BoogieIcfgContainer [2020-10-14 03:58:21,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:58:21,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:58:21,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:58:21,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:58:21,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:58:12" (1/3) ... [2020-10-14 03:58:21,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bddb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:21, skipping insertion in model container [2020-10-14 03:58:21,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:14" (2/3) ... [2020-10-14 03:58:21,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bddb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:21, skipping insertion in model container [2020-10-14 03:58:21,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:21" (3/3) ... [2020-10-14 03:58:21,299 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label20.c [2020-10-14 03:58:21,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:58:21,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:58:21,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:58:21,372 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:58:21,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:58:21,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:58:21,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:58:21,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:58:21,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:58:21,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:58:21,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:58:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:58:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 03:58:21,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:21,417 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] [2020-10-14 03:58:21,418 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:21,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1354524993, now seen corresponding path program 1 times [2020-10-14 03:58:21,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:21,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204087691] [2020-10-14 03:58:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:22,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 03:58:22,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-14 03:58:22,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:22,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:58:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 03:58:22,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:58:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 03:58:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:22,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:22,234 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 03:58:22,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204087691] [2020-10-14 03:58:22,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:58:22,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:58:22,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054428746] [2020-10-14 03:58:22,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:58:22,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:58:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:58:22,262 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:58:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:29,921 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 03:58:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:29,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 03:58:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:29,957 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 03:58:29,957 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 03:58:29,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 03:58:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 03:58:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 03:58:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 03:58:30,160 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 32 [2020-10-14 03:58:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:30,161 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 03:58:30,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:58:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 03:58:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 03:58:30,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:30,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:30,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:58:30,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1522428140, now seen corresponding path program 1 times [2020-10-14 03:58:30,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:30,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505666292] [2020-10-14 03:58:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:31,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:31,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 03:58:31,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-14 03:58:31,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:31,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:58:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:58:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:31,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:31,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:58:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:31,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:58:31,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:58:31,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:31,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:58:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:58:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:31,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505666292] [2020-10-14 03:58:31,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:31,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:31,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051847915] [2020-10-14 03:58:31,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:31,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:31,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:31,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:31,939 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 03:58:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:43,259 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 03:58:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:43,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 03:58:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:43,276 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 03:58:43,276 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 03:58:43,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:58:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 03:58:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 03:58:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 03:58:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 03:58:43,336 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 103 [2020-10-14 03:58:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:43,337 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 03:58:43,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 03:58:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 03:58:43,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:43,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:43,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:58:43,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:43,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1448831800, now seen corresponding path program 1 times [2020-10-14 03:58:43,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:43,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738562521] [2020-10-14 03:58:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:43,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:58:43,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-14 03:58:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:43,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:58:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:58:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:43,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:43,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:43,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:58:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:58:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:44,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:58:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:44,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738562521] [2020-10-14 03:58:44,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:44,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:44,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116779116] [2020-10-14 03:58:44,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:44,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:44,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:44,185 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 03:58:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:55,165 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 03:58:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:55,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-14 03:58:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:55,181 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 03:58:55,182 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 03:58:55,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:58:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 03:58:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 03:58:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 03:58:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3663 transitions. [2020-10-14 03:58:55,254 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3663 transitions. Word has length 106 [2020-10-14 03:58:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:55,255 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3663 transitions. [2020-10-14 03:58:55,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3663 transitions. [2020-10-14 03:58:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 03:58:55,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:55,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:55,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:58:55,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2067589852, now seen corresponding path program 1 times [2020-10-14 03:58:55,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:55,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50733701] [2020-10-14 03:58:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:56,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:58:56,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:58:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 03:58:56,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:56,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:56,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:58:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:58:56,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:56,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:56,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:56,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:58:56,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:58:56,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:56,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:58:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:58:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:56,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50733701] [2020-10-14 03:58:56,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:56,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:56,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148357745] [2020-10-14 03:58:56,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:56,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:56,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:56,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:56,405 INFO L87 Difference]: Start difference. First operand 2775 states and 3663 transitions. Second operand 5 states. [2020-10-14 03:59:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:07,077 INFO L93 Difference]: Finished difference Result 6454 states and 8793 transitions. [2020-10-14 03:59:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:07,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 03:59:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:07,106 INFO L225 Difference]: With dead ends: 6454 [2020-10-14 03:59:07,107 INFO L226 Difference]: Without dead ends: 3685 [2020-10-14 03:59:07,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:07,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2020-10-14 03:59:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3672. [2020-10-14 03:59:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-14 03:59:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4860 transitions. [2020-10-14 03:59:07,208 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4860 transitions. Word has length 111 [2020-10-14 03:59:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:07,209 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4860 transitions. [2020-10-14 03:59:07,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4860 transitions. [2020-10-14 03:59:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 03:59:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:07,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:59:07,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:59:07,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2116304622, now seen corresponding path program 1 times [2020-10-14 03:59:07,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:07,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691683162] [2020-10-14 03:59:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:59:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-14 03:59:08,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 03:59:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:59:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 03:59:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:59:08,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:08,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 03:59:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:08,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691683162] [2020-10-14 03:59:08,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:08,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:08,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911715812] [2020-10-14 03:59:08,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:08,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:08,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:08,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:08,604 INFO L87 Difference]: Start difference. First operand 3672 states and 4860 transitions. Second operand 5 states. [2020-10-14 03:59:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:20,238 INFO L93 Difference]: Finished difference Result 10850 states and 14604 transitions. [2020-10-14 03:59:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:20,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 03:59:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:20,274 INFO L225 Difference]: With dead ends: 10850 [2020-10-14 03:59:20,275 INFO L226 Difference]: Without dead ends: 7184 [2020-10-14 03:59:20,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2020-10-14 03:59:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7180. [2020-10-14 03:59:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7180 states. [2020-10-14 03:59:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 9164 transitions. [2020-10-14 03:59:20,425 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 9164 transitions. Word has length 134 [2020-10-14 03:59:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:20,426 INFO L479 AbstractCegarLoop]: Abstraction has 7180 states and 9164 transitions. [2020-10-14 03:59:20,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 9164 transitions. [2020-10-14 03:59:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 03:59:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:20,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:59:20,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:59:20,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash 761393037, now seen corresponding path program 1 times [2020-10-14 03:59:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188863633] [2020-10-14 03:59:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:20,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 03:59:25,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:59:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:59:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:59:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:59:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:25,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:59:25,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:59:25,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:59:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:59:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:59:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 03:59:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:25,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:59:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:59:25,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188863633] [2020-10-14 03:59:25,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:25,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:25,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194111943] [2020-10-14 03:59:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:25,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:25,902 INFO L87 Difference]: Start difference. First operand 7180 states and 9164 transitions. Second operand 7 states. [2020-10-14 03:59:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:38,286 INFO L93 Difference]: Finished difference Result 17563 states and 22910 transitions. [2020-10-14 03:59:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:59:38,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-10-14 03:59:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:38,320 INFO L225 Difference]: With dead ends: 17563 [2020-10-14 03:59:38,320 INFO L226 Difference]: Without dead ends: 8156 [2020-10-14 03:59:38,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:59:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2020-10-14 03:59:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7714. [2020-10-14 03:59:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7714 states. [2020-10-14 03:59:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7714 states to 7714 states and 9132 transitions. [2020-10-14 03:59:38,496 INFO L78 Accepts]: Start accepts. Automaton has 7714 states and 9132 transitions. Word has length 181 [2020-10-14 03:59:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:38,497 INFO L479 AbstractCegarLoop]: Abstraction has 7714 states and 9132 transitions. [2020-10-14 03:59:38,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:59:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7714 states and 9132 transitions. [2020-10-14 03:59:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 03:59:38,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:38,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:38,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:59:38,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1944797959, now seen corresponding path program 1 times [2020-10-14 03:59:38,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:38,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970889778] [2020-10-14 03:59:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:41,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:41,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 03:59:41,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:59:41,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3390 [2020-10-14 03:59:41,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:41,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 03:59:41,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:59:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:59:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:42,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:42,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:42,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:42,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:42,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:42,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:42,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:42,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:42,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:59:42,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:42,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:42,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:42,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:59:42,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:59:42,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:42,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:59:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:59:42,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970889778] [2020-10-14 03:59:42,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:42,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:42,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472027801] [2020-10-14 03:59:42,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:42,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:42,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:42,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:42,283 INFO L87 Difference]: Start difference. First operand 7714 states and 9132 transitions. Second operand 5 states. [2020-10-14 03:59:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:49,181 INFO L93 Difference]: Finished difference Result 18955 states and 22909 transitions. [2020-10-14 03:59:49,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:49,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 03:59:49,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:49,227 INFO L225 Difference]: With dead ends: 18955 [2020-10-14 03:59:49,227 INFO L226 Difference]: Without dead ends: 11246 [2020-10-14 03:59:49,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:59:49,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2020-10-14 03:59:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 10368. [2020-10-14 03:59:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10368 states. [2020-10-14 03:59:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 12239 transitions. [2020-10-14 03:59:49,506 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 12239 transitions. Word has length 194 [2020-10-14 03:59:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:49,506 INFO L479 AbstractCegarLoop]: Abstraction has 10368 states and 12239 transitions. [2020-10-14 03:59:49,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 12239 transitions. [2020-10-14 03:59:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 03:59:49,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:49,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:59:49,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:59:49,517 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash -937156286, now seen corresponding path program 1 times [2020-10-14 03:59:49,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:49,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211915860] [2020-10-14 03:59:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:49,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:52,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 03:59:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:59:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-14 03:59:52,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:52,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 03:59:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:59:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:59:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:52,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:52,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:52,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:59:52,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:52,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:52,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:52,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:59:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:59:52,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:52,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:59:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 03:59:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:59:53,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 03:59:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:53,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:59:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 03:59:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:53,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 03:59:53,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 03:59:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:53,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:59:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:53,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 163 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 03:59:53,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211915860] [2020-10-14 03:59:53,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:53,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:53,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2527400] [2020-10-14 03:59:53,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:53,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:53,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:53,822 INFO L87 Difference]: Start difference. First operand 10368 states and 12239 transitions. Second operand 7 states. [2020-10-14 04:00:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:07,606 INFO L93 Difference]: Finished difference Result 22181 states and 26228 transitions. [2020-10-14 04:00:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:07,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 04:00:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:07,639 INFO L225 Difference]: With dead ends: 22181 [2020-10-14 04:00:07,640 INFO L226 Difference]: Without dead ends: 11819 [2020-10-14 04:00:07,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:00:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11819 states. [2020-10-14 04:00:07,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11819 to 11803. [2020-10-14 04:00:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11803 states. [2020-10-14 04:00:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11803 states to 11803 states and 13932 transitions. [2020-10-14 04:00:07,842 INFO L78 Accepts]: Start accepts. Automaton has 11803 states and 13932 transitions. Word has length 316 [2020-10-14 04:00:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:07,842 INFO L479 AbstractCegarLoop]: Abstraction has 11803 states and 13932 transitions. [2020-10-14 04:00:07,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 11803 states and 13932 transitions. [2020-10-14 04:00:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 04:00:07,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:07,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:00:07,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:00:07,851 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:07,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:07,851 INFO L82 PathProgramCache]: Analyzing trace with hash 841244519, now seen corresponding path program 1 times [2020-10-14 04:00:07,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:07,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064888145] [2020-10-14 04:00:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-14 04:00:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 04:00:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4062 [2020-10-14 04:00:12,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:00:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 04:00:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:12,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:00:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:00:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:12,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:00:12,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:12,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:00:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:00:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 04:00:12,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 04:00:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:00:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-14 04:00:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:12,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:12,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:00:12,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:12,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:00:12,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:12,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:00:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 04:00:12,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064888145] [2020-10-14 04:00:12,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:12,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:00:12,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359349443] [2020-10-14 04:00:12,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:00:12,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:12,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:00:12,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:00:12,849 INFO L87 Difference]: Start difference. First operand 11803 states and 13932 transitions. Second operand 6 states. [2020-10-14 04:00:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:22,762 INFO L93 Difference]: Finished difference Result 23579 states and 27882 transitions. [2020-10-14 04:00:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:22,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 342 [2020-10-14 04:00:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:22,801 INFO L225 Difference]: With dead ends: 23579 [2020-10-14 04:00:22,801 INFO L226 Difference]: Without dead ends: 11782 [2020-10-14 04:00:22,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11782 states. [2020-10-14 04:00:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11782 to 11772. [2020-10-14 04:00:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11772 states. [2020-10-14 04:00:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11772 states to 11772 states and 13865 transitions. [2020-10-14 04:00:23,024 INFO L78 Accepts]: Start accepts. Automaton has 11772 states and 13865 transitions. Word has length 342 [2020-10-14 04:00:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:23,025 INFO L479 AbstractCegarLoop]: Abstraction has 11772 states and 13865 transitions. [2020-10-14 04:00:23,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:00:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 11772 states and 13865 transitions. [2020-10-14 04:00:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 04:00:23,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:23,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:00:23,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:00:23,036 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash -622592630, now seen corresponding path program 1 times [2020-10-14 04:00:23,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:23,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97579823] [2020-10-14 04:00:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-14 04:00:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:00:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:28,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:28,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:28,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:28,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 04:00:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 04:00:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:00:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:00:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:00:28,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97579823] [2020-10-14 04:00:28,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:28,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:00:28,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848772797] [2020-10-14 04:00:28,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:00:28,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:28,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:00:28,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:00:28,689 INFO L87 Difference]: Start difference. First operand 11772 states and 13865 transitions. Second operand 7 states. [2020-10-14 04:00:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:43,373 INFO L93 Difference]: Finished difference Result 28660 states and 35187 transitions. [2020-10-14 04:00:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:43,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-14 04:00:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:43,436 INFO L225 Difference]: With dead ends: 28660 [2020-10-14 04:00:43,436 INFO L226 Difference]: Without dead ends: 16441 [2020-10-14 04:00:43,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:00:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16441 states. [2020-10-14 04:00:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16441 to 15891. [2020-10-14 04:00:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15891 states. [2020-10-14 04:00:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15891 states to 15891 states and 18853 transitions. [2020-10-14 04:00:43,774 INFO L78 Accepts]: Start accepts. Automaton has 15891 states and 18853 transitions. Word has length 359 [2020-10-14 04:00:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:43,774 INFO L479 AbstractCegarLoop]: Abstraction has 15891 states and 18853 transitions. [2020-10-14 04:00:43,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15891 states and 18853 transitions. [2020-10-14 04:00:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 04:00:43,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:43,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:00:43,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:00:43,788 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1568646223, now seen corresponding path program 1 times [2020-10-14 04:00:43,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:43,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171496615] [2020-10-14 04:00:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:44,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:48,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 04:00:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:00:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 354 [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:00:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:49,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:49,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:49,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:49,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 04:00:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:49,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:49,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:00:49,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:00:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 04:00:49,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171496615] [2020-10-14 04:00:49,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:49,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:49,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730204915] [2020-10-14 04:00:49,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:49,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:49,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:49,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:49,289 INFO L87 Difference]: Start difference. First operand 15891 states and 18853 transitions. Second operand 5 states. [2020-10-14 04:01:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:00,399 INFO L93 Difference]: Finished difference Result 36179 states and 43572 transitions. [2020-10-14 04:01:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:00,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-14 04:01:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:00,462 INFO L225 Difference]: With dead ends: 36179 [2020-10-14 04:01:00,462 INFO L226 Difference]: Without dead ends: 19856 [2020-10-14 04:01:00,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19856 states. [2020-10-14 04:01:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19856 to 18954. [2020-10-14 04:01:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18954 states. [2020-10-14 04:01:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18954 states to 18954 states and 22718 transitions. [2020-10-14 04:01:00,793 INFO L78 Accepts]: Start accepts. Automaton has 18954 states and 22718 transitions. Word has length 372 [2020-10-14 04:01:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:00,793 INFO L479 AbstractCegarLoop]: Abstraction has 18954 states and 22718 transitions. [2020-10-14 04:01:00,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 18954 states and 22718 transitions. [2020-10-14 04:01:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-14 04:01:00,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:00,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:00,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:01:00,806 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:00,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1893972457, now seen corresponding path program 1 times [2020-10-14 04:01:00,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:00,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062281777] [2020-10-14 04:01:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:01,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:01,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 04:01:01,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-14 04:01:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:01,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:01:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:01:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-14 04:01:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:02,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:02,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:02,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:01:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:02,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:01:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-14 04:01:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:01:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:01:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 04:01:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:03,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062281777] [2020-10-14 04:01:03,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:03,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:01:03,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031023522] [2020-10-14 04:01:03,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:01:03,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:03,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:01:03,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:01:03,254 INFO L87 Difference]: Start difference. First operand 18954 states and 22718 transitions. Second operand 8 states. [2020-10-14 04:01:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:23,984 INFO L93 Difference]: Finished difference Result 43714 states and 52038 transitions. [2020-10-14 04:01:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:01:23,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 379 [2020-10-14 04:01:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:24,044 INFO L225 Difference]: With dead ends: 43714 [2020-10-14 04:01:24,044 INFO L226 Difference]: Without dead ends: 24328 [2020-10-14 04:01:24,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:01:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24328 states. [2020-10-14 04:01:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24328 to 24271. [2020-10-14 04:01:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24271 states. [2020-10-14 04:01:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 28760 transitions. [2020-10-14 04:01:24,441 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 28760 transitions. Word has length 379 [2020-10-14 04:01:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:24,442 INFO L479 AbstractCegarLoop]: Abstraction has 24271 states and 28760 transitions. [2020-10-14 04:01:24,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:01:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 28760 transitions. [2020-10-14 04:01:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 04:01:24,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:24,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:24,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:01:24,458 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1321751055, now seen corresponding path program 1 times [2020-10-14 04:01:24,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:24,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549803971] [2020-10-14 04:01:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:24,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 04:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:01:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:29,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:29,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 04:01:29,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 04:01:29,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:29,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-14 04:01:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 04:01:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:01:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:30,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 04:01:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:01:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-14 04:01:30,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549803971] [2020-10-14 04:01:30,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:01:30,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:01:30,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587871357] [2020-10-14 04:01:30,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:01:30,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:01:30,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:01:30,333 INFO L87 Difference]: Start difference. First operand 24271 states and 28760 transitions. Second operand 5 states. [2020-10-14 04:01:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:40,305 INFO L93 Difference]: Finished difference Result 48545 states and 58019 transitions. [2020-10-14 04:01:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:40,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 417 [2020-10-14 04:01:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:40,370 INFO L225 Difference]: With dead ends: 48545 [2020-10-14 04:01:40,370 INFO L226 Difference]: Without dead ends: 24713 [2020-10-14 04:01:40,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:01:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24713 states. [2020-10-14 04:01:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24713 to 24694. [2020-10-14 04:01:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24694 states. [2020-10-14 04:01:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24694 states to 24694 states and 28375 transitions. [2020-10-14 04:01:40,827 INFO L78 Accepts]: Start accepts. Automaton has 24694 states and 28375 transitions. Word has length 417 [2020-10-14 04:01:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:40,828 INFO L479 AbstractCegarLoop]: Abstraction has 24694 states and 28375 transitions. [2020-10-14 04:01:40,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24694 states and 28375 transitions. [2020-10-14 04:01:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-14 04:01:40,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:40,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:40,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:01:40,843 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 789077601, now seen corresponding path program 1 times [2020-10-14 04:01:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:40,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313574734] [2020-10-14 04:01:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4415 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 405 [2020-10-14 04:01:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:45,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:45,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:45,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:01:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:45,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:01:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 04:01:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:45,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:01:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-14 04:01:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:01:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:46,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:46,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:01:46,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:01:46,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:46,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:01:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:46,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 04:01:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 04:01:46,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313574734] [2020-10-14 04:01:46,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:46,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:01:46,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328151139] [2020-10-14 04:01:46,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:01:46,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:46,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:01:46,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:01:46,697 INFO L87 Difference]: Start difference. First operand 24694 states and 28375 transitions. Second operand 10 states.