/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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:58:01,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:58:01,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:58:01,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:58:01,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:58:01,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:58:01,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:58:01,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:58:01,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:58:01,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:58:01,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:58:01,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:58:01,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:58:01,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:58:01,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:58:01,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:58:01,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:58:01,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:58:01,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:58:01,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:58:01,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:58:01,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:58:01,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:58:01,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:58:01,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:58:01,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:58:01,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:58:01,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:58:01,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:58:01,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:58:01,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:58:01,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:58:01,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:58:01,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:58:01,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:58:01,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:58:01,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:58:01,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:58:01,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:58:01,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:58:01,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:58:01,321 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 03:58:01,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:58:01,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:58:01,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:58:01,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:58:01,372 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:58:01,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:58:01,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:58:01,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:58:01,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:58:01,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:58:01,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:58:01,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:58:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:58:01,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:58:01,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:58:01,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:58:01,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:58:01,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:58:01,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:58:01,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:58:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:58:01,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:58:01,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:58:01,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:58:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:58:01,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:58:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:58:01,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:58:01,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:58:01,379 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 03:58:01,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:58:01,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:58:01,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:58:01,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:58:01,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:58:01,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-14 03:58:01,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71705528e/33f5284770494525b59cd22222323f19/FLAGbbc928b43 [2020-10-14 03:58:02,529 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:58:02,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-14 03:58:02,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71705528e/33f5284770494525b59cd22222323f19/FLAGbbc928b43 [2020-10-14 03:58:02,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71705528e/33f5284770494525b59cd22222323f19 [2020-10-14 03:58:02,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:58:02,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:58:02,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:02,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:58:02,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:58:02,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:02" (1/1) ... [2020-10-14 03:58:02,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9acc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:02, skipping insertion in model container [2020-10-14 03:58:02,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:58:02" (1/1) ... [2020-10-14 03:58:02,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:58:02,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:58:04,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:04,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:58:04,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:58:04,593 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:58:04,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04 WrapperNode [2020-10-14 03:58:04,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:58:04,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:58:04,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:58:04,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:58:04,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (1/1) ... [2020-10-14 03:58:04,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:58:04,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:58:04,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:58:04,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:58:04,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (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 03:58:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:58:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:58:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:58:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:58:05,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:58:05,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:58:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:58:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:58:13,971 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:58:13,971 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:58:13,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:13 BoogieIcfgContainer [2020-10-14 03:58:13,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:58:13,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:58:13,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:58:13,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:58:13,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:58:02" (1/3) ... [2020-10-14 03:58:13,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378376e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:13, skipping insertion in model container [2020-10-14 03:58:13,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:58:04" (2/3) ... [2020-10-14 03:58:13,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378376e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:58:13, skipping insertion in model container [2020-10-14 03:58:13,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:58:13" (3/3) ... [2020-10-14 03:58:14,001 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2020-10-14 03:58:14,012 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:58:14,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:58:14,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:58:14,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:58:14,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:58:14,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:58:14,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:58:14,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:58:14,073 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:58:14,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:58:14,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:58:14,106 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 03:58:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 03:58:14,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:14,115 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] [2020-10-14 03:58:14,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash 736430857, now seen corresponding path program 1 times [2020-10-14 03:58:14,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:14,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36598540] [2020-10-14 03:58:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:14,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:14,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 03:58:14,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 03:58:14,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:14,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:58:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 03:58:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:58:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:14,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:14,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:14,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:58:14,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:14,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:14,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:14,793 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 03:58:14,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36598540] [2020-10-14 03:58:14,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:58:14,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:58:14,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915708133] [2020-10-14 03:58:14,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:58:14,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:14,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:58:14,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:58:14,822 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 03:58:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:24,980 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 03:58:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:24,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 03:58:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:25,009 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 03:58:25,009 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 03:58:25,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 03:58:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 03:58:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 03:58:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 03:58:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 03:58:25,135 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 31 [2020-10-14 03:58:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:25,136 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 03:58:25,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:58:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 03:58:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 03:58:25,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:25,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:25,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:58:25,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:25,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1876242177, now seen corresponding path program 1 times [2020-10-14 03:58:25,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:25,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364513221] [2020-10-14 03:58:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:58:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:58:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-14 03:58:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:58:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 03:58:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 03:58:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:58:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:58:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:58:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:26,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:26,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:58:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:58:26,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:26,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 03:58:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:26,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364513221] [2020-10-14 03:58:26,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:26,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:58:26,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998737063] [2020-10-14 03:58:26,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:58:26,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:58:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:58:26,450 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 03:58:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:40,712 INFO L93 Difference]: Finished difference Result 2899 states and 4501 transitions. [2020-10-14 03:58:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:58:40,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 03:58:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:40,724 INFO L225 Difference]: With dead ends: 2899 [2020-10-14 03:58:40,725 INFO L226 Difference]: Without dead ends: 1914 [2020-10-14 03:58:40,728 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 03:58:40,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-14 03:58:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1889. [2020-10-14 03:58:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-14 03:58:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2683 transitions. [2020-10-14 03:58:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2683 transitions. Word has length 102 [2020-10-14 03:58:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:40,794 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2683 transitions. [2020-10-14 03:58:40,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:58:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2683 transitions. [2020-10-14 03:58:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 03:58:40,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:40,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:40,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:58:40,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:40,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:40,799 INFO L82 PathProgramCache]: Analyzing trace with hash -368469103, now seen corresponding path program 1 times [2020-10-14 03:58:40,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:40,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116651205] [2020-10-14 03:58:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:41,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 03:58:41,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-14 03:58:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:41,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 03:58:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:58:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 03:58:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:58:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:41,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:41,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:58:41,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:58:41,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:41,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:58:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:58:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:58:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:58:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:58:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:58:41,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:58:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 03:58:41,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:58:41,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:58:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:58:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:58:41,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:58:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:58:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:58:41,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116651205] [2020-10-14 03:58:41,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:58:41,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:58:41,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54256031] [2020-10-14 03:58:41,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:58:41,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:58:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:58:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:58:41,890 INFO L87 Difference]: Start difference. First operand 1889 states and 2683 transitions. Second operand 8 states. [2020-10-14 03:58:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:58:59,550 INFO L93 Difference]: Finished difference Result 5659 states and 8140 transitions. [2020-10-14 03:58:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:58:59,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-14 03:58:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:58:59,573 INFO L225 Difference]: With dead ends: 5659 [2020-10-14 03:58:59,573 INFO L226 Difference]: Without dead ends: 3776 [2020-10-14 03:58:59,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:58:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2020-10-14 03:58:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3717. [2020-10-14 03:58:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3717 states. [2020-10-14 03:58:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5044 transitions. [2020-10-14 03:58:59,692 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5044 transitions. Word has length 105 [2020-10-14 03:58:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:58:59,693 INFO L479 AbstractCegarLoop]: Abstraction has 3717 states and 5044 transitions. [2020-10-14 03:58:59,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:58:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5044 transitions. [2020-10-14 03:58:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 03:58:59,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:58:59,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:58:59,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:58:59,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:58:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:58:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash 269805784, now seen corresponding path program 1 times [2020-10-14 03:58:59,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:58:59,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979446154] [2020-10-14 03:58:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:58:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:58:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:59:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-10-14 03:59:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 03:59:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 03:59:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:00,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:00,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:00,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:59:00,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:00,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:00,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:01,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:01,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:59:01,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 03:59:01,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:01,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 03:59:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:01,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979446154] [2020-10-14 03:59:01,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:01,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:01,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998453364] [2020-10-14 03:59:01,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:01,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:01,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:01,128 INFO L87 Difference]: Start difference. First operand 3717 states and 5044 transitions. Second operand 5 states. [2020-10-14 03:59:15,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:15,298 INFO L93 Difference]: Finished difference Result 8811 states and 12557 transitions. [2020-10-14 03:59:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:15,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 03:59:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:15,335 INFO L225 Difference]: With dead ends: 8811 [2020-10-14 03:59:15,336 INFO L226 Difference]: Without dead ends: 5971 [2020-10-14 03:59:15,345 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 03:59:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2020-10-14 03:59:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5957. [2020-10-14 03:59:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5957 states. [2020-10-14 03:59:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 7861 transitions. [2020-10-14 03:59:15,516 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 7861 transitions. Word has length 121 [2020-10-14 03:59:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:15,518 INFO L479 AbstractCegarLoop]: Abstraction has 5957 states and 7861 transitions. [2020-10-14 03:59:15,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 7861 transitions. [2020-10-14 03:59:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 03:59:15,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:15,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:15,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:59:15,527 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:15,528 INFO L82 PathProgramCache]: Analyzing trace with hash 530099091, now seen corresponding path program 1 times [2020-10-14 03:59:15,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:15,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851496351] [2020-10-14 03:59:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:16,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 03:59:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:59:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-14 03:59:16,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:16,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 03:59:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 03:59:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:59:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:16,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 03:59:16,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:59:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:16,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:59:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:59:16,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851496351] [2020-10-14 03:59:16,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:16,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:59:16,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451074743] [2020-10-14 03:59:16,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:59:16,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:16,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:59:16,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:59:16,677 INFO L87 Difference]: Start difference. First operand 5957 states and 7861 transitions. Second operand 5 states. [2020-10-14 03:59:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:59:33,020 INFO L93 Difference]: Finished difference Result 13280 states and 18421 transitions. [2020-10-14 03:59:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:59:33,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 03:59:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:59:33,075 INFO L225 Difference]: With dead ends: 13280 [2020-10-14 03:59:33,076 INFO L226 Difference]: Without dead ends: 9540 [2020-10-14 03:59:33,088 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 03:59:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9540 states. [2020-10-14 03:59:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9540 to 9509. [2020-10-14 03:59:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9509 states. [2020-10-14 03:59:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 12416 transitions. [2020-10-14 03:59:33,358 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 12416 transitions. Word has length 128 [2020-10-14 03:59:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:59:33,362 INFO L479 AbstractCegarLoop]: Abstraction has 9509 states and 12416 transitions. [2020-10-14 03:59:33,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:59:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 12416 transitions. [2020-10-14 03:59:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 03:59:33,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:59:33,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:59:33,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:59:33,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:59:33,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:59:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1504631663, now seen corresponding path program 1 times [2020-10-14 03:59:33,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:59:33,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949107127] [2020-10-14 03:59:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:59:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:38,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:38,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 03:59:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:59:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 03:59:38,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:38,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:59:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:59:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:59:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:38,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:38,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:59:38,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:59:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:38,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:38,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:59:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:59:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:38,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:59:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:38,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:38,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:59:38,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:59:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:38,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:59:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:59:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:59:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 03:59:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:59:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:59:38,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:59:38,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:59:38,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:59:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:59:38,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:59:38,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:59:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:59:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:59:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:59:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:59:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:59:38,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949107127] [2020-10-14 03:59:38,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:59:38,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:59:38,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478403472] [2020-10-14 03:59:38,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:59:38,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:59:38,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:59:38,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:59:38,929 INFO L87 Difference]: Start difference. First operand 9509 states and 12416 transitions. Second operand 7 states. [2020-10-14 04:00:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:00,338 INFO L93 Difference]: Finished difference Result 20951 states and 28442 transitions. [2020-10-14 04:00:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:00:00,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-14 04:00:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:00,388 INFO L225 Difference]: With dead ends: 20951 [2020-10-14 04:00:00,389 INFO L226 Difference]: Without dead ends: 8758 [2020-10-14 04:00:00,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:00:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8758 states. [2020-10-14 04:00:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8758 to 8740. [2020-10-14 04:00:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8740 states. [2020-10-14 04:00:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8740 states to 8740 states and 11087 transitions. [2020-10-14 04:00:00,657 INFO L78 Accepts]: Start accepts. Automaton has 8740 states and 11087 transitions. Word has length 175 [2020-10-14 04:00:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:00,658 INFO L479 AbstractCegarLoop]: Abstraction has 8740 states and 11087 transitions. [2020-10-14 04:00:00,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:00:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8740 states and 11087 transitions. [2020-10-14 04:00:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 04:00:00,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:00,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 04:00:00,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:00:00,662 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1009269023, now seen corresponding path program 1 times [2020-10-14 04:00:00,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:00,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246793564] [2020-10-14 04:00:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 04:00:01,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:00:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 04:00:01,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:01,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:00:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:00:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:00:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:00:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:02,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:00:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:00:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 04:00:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:02,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:00:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:00:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:00:02,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246793564] [2020-10-14 04:00:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:02,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:00:02,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864208145] [2020-10-14 04:00:02,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:00:02,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:00:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:00:02,444 INFO L87 Difference]: Start difference. First operand 8740 states and 11087 transitions. Second operand 8 states. [2020-10-14 04:00:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:17,814 INFO L93 Difference]: Finished difference Result 17493 states and 22632 transitions. [2020-10-14 04:00:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:00:17,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-14 04:00:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:17,849 INFO L225 Difference]: With dead ends: 17493 [2020-10-14 04:00:17,850 INFO L226 Difference]: Without dead ends: 9192 [2020-10-14 04:00:17,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:00:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2020-10-14 04:00:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 9172. [2020-10-14 04:00:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9172 states. [2020-10-14 04:00:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9172 states to 9172 states and 11206 transitions. [2020-10-14 04:00:18,048 INFO L78 Accepts]: Start accepts. Automaton has 9172 states and 11206 transitions. Word has length 188 [2020-10-14 04:00:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:18,048 INFO L479 AbstractCegarLoop]: Abstraction has 9172 states and 11206 transitions. [2020-10-14 04:00:18,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:00:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9172 states and 11206 transitions. [2020-10-14 04:00:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 04:00:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:18,052 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:00:18,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:00:18,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash 473966385, now seen corresponding path program 1 times [2020-10-14 04:00:18,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:18,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084625729] [2020-10-14 04:00:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:21,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 04:00:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:00:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3815 [2020-10-14 04:00:21,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:21,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:21,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:00:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:00:21,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:22,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:22,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:22,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:00:22,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:22,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:22,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:22,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:22,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:00:22,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:22,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:00:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:22,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:22,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:00:22,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 04:00:22,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:22,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:00:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:00:22,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084625729] [2020-10-14 04:00:22,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:22,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:22,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894626053] [2020-10-14 04:00:22,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:22,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:22,401 INFO L87 Difference]: Start difference. First operand 9172 states and 11206 transitions. Second operand 5 states. [2020-10-14 04:00:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:00:37,113 INFO L93 Difference]: Finished difference Result 22764 states and 28244 transitions. [2020-10-14 04:00:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:00:37,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 04:00:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:00:37,161 INFO L225 Difference]: With dead ends: 22764 [2020-10-14 04:00:37,162 INFO L226 Difference]: Without dead ends: 14031 [2020-10-14 04:00:37,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 04:00:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2020-10-14 04:00:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 13145. [2020-10-14 04:00:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13145 states. [2020-10-14 04:00:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 15691 transitions. [2020-10-14 04:00:37,560 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 15691 transitions. Word has length 193 [2020-10-14 04:00:37,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:00:37,561 INFO L479 AbstractCegarLoop]: Abstraction has 13145 states and 15691 transitions. [2020-10-14 04:00:37,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:00:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 15691 transitions. [2020-10-14 04:00:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 04:00:37,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:00:37,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:00:37,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:00:37,565 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:00:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:00:37,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1965147098, now seen corresponding path program 1 times [2020-10-14 04:00:37,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:00:37,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921015206] [2020-10-14 04:00:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:00:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 04:00:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:00:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 04:00:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:42,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:00:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:00:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:00:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:00:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:42,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:00:42,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:00:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:42,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:00:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:42,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:42,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:00:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:00:42,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:42,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:00:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:00:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:00:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:00:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:00:42,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:00:42,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:00:42,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:00:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:00:42,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:00:42,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:00:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:00:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:00:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:00:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:00:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 04:00:43,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921015206] [2020-10-14 04:00:43,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:00:43,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:00:43,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328603688] [2020-10-14 04:00:43,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:00:43,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:00:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:00:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:00:43,063 INFO L87 Difference]: Start difference. First operand 13145 states and 15691 transitions. Second operand 5 states. [2020-10-14 04:01:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:00,564 INFO L93 Difference]: Finished difference Result 29411 states and 35921 transitions. [2020-10-14 04:01:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:01:00,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-14 04:01:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:00,606 INFO L225 Difference]: With dead ends: 29411 [2020-10-14 04:01:00,606 INFO L226 Difference]: Without dead ends: 15807 [2020-10-14 04:01:00,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:01:00,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15807 states. [2020-10-14 04:01:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15807 to 15800. [2020-10-14 04:01:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15800 states. [2020-10-14 04:01:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15800 states to 15800 states and 18359 transitions. [2020-10-14 04:01:00,856 INFO L78 Accepts]: Start accepts. Automaton has 15800 states and 18359 transitions. Word has length 204 [2020-10-14 04:01:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:00,856 INFO L479 AbstractCegarLoop]: Abstraction has 15800 states and 18359 transitions. [2020-10-14 04:01:00,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:01:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15800 states and 18359 transitions. [2020-10-14 04:01:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 04:01:00,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:00,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:01:00,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:01:00,860 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:00,860 INFO L82 PathProgramCache]: Analyzing trace with hash -89615734, now seen corresponding path program 1 times [2020-10-14 04:01:00,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:00,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507890303] [2020-10-14 04:01:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:03,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 04:01:03,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:01:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-14 04:01:03,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:03,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:01:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:01:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:03,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:03,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:03,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:03,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:03,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:03,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:01:03,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:03,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:03,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:03,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:01:03,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:03,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:01:03,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 04:01:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:03,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:01:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:01:04,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507890303] [2020-10-14 04:01:04,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:04,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:01:04,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821341248] [2020-10-14 04:01:04,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:01:04,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:01:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:01:04,100 INFO L87 Difference]: Start difference. First operand 15800 states and 18359 transitions. Second operand 7 states. [2020-10-14 04:01:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:26,079 INFO L93 Difference]: Finished difference Result 37236 states and 44065 transitions. [2020-10-14 04:01:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:01:26,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-14 04:01:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:26,154 INFO L225 Difference]: With dead ends: 37236 [2020-10-14 04:01:26,154 INFO L226 Difference]: Without dead ends: 21435 [2020-10-14 04:01:26,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:01:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21435 states. [2020-10-14 04:01:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21435 to 21363. [2020-10-14 04:01:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21363 states. [2020-10-14 04:01:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21363 states to 21363 states and 24711 transitions. [2020-10-14 04:01:26,583 INFO L78 Accepts]: Start accepts. Automaton has 21363 states and 24711 transitions. Word has length 206 [2020-10-14 04:01:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:26,584 INFO L479 AbstractCegarLoop]: Abstraction has 21363 states and 24711 transitions. [2020-10-14 04:01:26,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:01:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 21363 states and 24711 transitions. [2020-10-14 04:01:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 04:01:26,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:26,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:01:26,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:01:26,590 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash -26601476, now seen corresponding path program 1 times [2020-10-14 04:01:26,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:26,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570203900] [2020-10-14 04:01:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:26,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:01:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:01:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:01:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:27,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:01:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:01:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:01:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:28,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:01:28,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:01:28,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:28,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:01:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:28,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:01:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:01:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:01:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:01:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:01:28,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570203900] [2020-10-14 04:01:28,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:01:28,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:01:28,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145161425] [2020-10-14 04:01:28,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:01:28,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:01:28,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:01:28,644 INFO L87 Difference]: Start difference. First operand 21363 states and 24711 transitions. Second operand 8 states. [2020-10-14 04:01:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:01:50,973 INFO L93 Difference]: Finished difference Result 44567 states and 51499 transitions. [2020-10-14 04:01:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:01:50,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-10-14 04:01:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:01:51,065 INFO L225 Difference]: With dead ends: 44567 [2020-10-14 04:01:51,065 INFO L226 Difference]: Without dead ends: 23645 [2020-10-14 04:01:51,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:01:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23645 states. [2020-10-14 04:01:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23645 to 23160. [2020-10-14 04:01:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23160 states. [2020-10-14 04:01:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23160 states to 23160 states and 26643 transitions. [2020-10-14 04:01:51,591 INFO L78 Accepts]: Start accepts. Automaton has 23160 states and 26643 transitions. Word has length 227 [2020-10-14 04:01:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:01:51,592 INFO L479 AbstractCegarLoop]: Abstraction has 23160 states and 26643 transitions. [2020-10-14 04:01:51,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:01:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 23160 states and 26643 transitions. [2020-10-14 04:01:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 04:01:52,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:52,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:01:52,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:01:52,498 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:52,499 INFO L82 PathProgramCache]: Analyzing trace with hash 747136441, now seen corresponding path program 1 times [2020-10-14 04:01:52,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:52,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054113406] [2020-10-14 04:01:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking...