/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 SingleStatement --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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:04,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:04,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:04,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:04,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:04,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:04,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:04,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:04,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:04,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:04,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:04,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:04,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:04,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:04,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:04,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:04,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:04,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:04,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:04,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:04,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:04,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:04,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:04,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:04,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:04,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:04,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:04,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:04,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:04,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:04,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:04,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:04,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:04,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:04,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:04,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:04,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:04,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:04,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:04,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:04,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:04,220 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 [2020-09-25 06:43:04,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:04,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:04,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:04,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:04,266 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:04,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:04,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:04,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:04,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:04,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:04,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:04,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:04,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:04,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:04,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:04,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:04,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:04,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:04,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:04,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:04,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:04,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:04,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:04,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:04,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:04,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:04,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:04,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:04,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:04,272 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 -> SingleStatement 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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=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=0.6;log-additional-information=true; [2020-09-25 06:43:04,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:04,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:04,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:04,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:04,788 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:04,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 06:43:04,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe7bedb0/ba42b1f822844cb59965039eb0af2b15/FLAGcc03402cd [2020-09-25 06:43:05,523 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:05,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 06:43:05,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe7bedb0/ba42b1f822844cb59965039eb0af2b15/FLAGcc03402cd [2020-09-25 06:43:05,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afe7bedb0/ba42b1f822844cb59965039eb0af2b15 [2020-09-25 06:43:05,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:05,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:05,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:05,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:05,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:05,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:05" (1/1) ... [2020-09-25 06:43:05,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a36ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:05, skipping insertion in model container [2020-09-25 06:43:05,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:05" (1/1) ... [2020-09-25 06:43:05,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:05,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:06,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:06,364 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:06,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:06,644 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:06,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06 WrapperNode [2020-09-25 06:43:06,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:06,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:06,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:06,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:06,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (1/1) ... [2020-09-25 06:43:06,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:06,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:06,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:06,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:06,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (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 [2020-09-25 06:43:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:08,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:08,336 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:08,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:08 BoogieIcfgContainer [2020-09-25 06:43:08,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:08,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:08,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:08,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:08,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:05" (1/3) ... [2020-09-25 06:43:08,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:08, skipping insertion in model container [2020-09-25 06:43:08,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:06" (2/3) ... [2020-09-25 06:43:08,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:08, skipping insertion in model container [2020-09-25 06:43:08,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:08" (3/3) ... [2020-09-25 06:43:08,358 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 06:43:08,370 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:08,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:08,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:08,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:08,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:08,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:08,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:08,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:08,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:08,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:08,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 06:43:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:08,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:08,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 06:43:08,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:08,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991375780] [2020-09-25 06:43:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 06:43:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-09-25 06:43:13,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:13,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 06:43:13,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:43:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:14,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:14,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991375780] [2020-09-25 06:43:14,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:14,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:14,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882493353] [2020-09-25 06:43:14,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:14,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:14,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:14,269 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:16,574 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:43:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:16,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 06:43:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:16,616 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:43:16,617 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:43:16,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:43:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:43:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:43:16,733 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 06:43:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:16,739 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:43:16,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:43:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:43:16,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:16,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:16,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:16,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 06:43:16,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:16,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643101121] [2020-09-25 06:43:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:43:21,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 06:43:21,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:43:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:21,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:21,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:43:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:43:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:43:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:22,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:22,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643101121] [2020-09-25 06:43:22,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:22,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:22,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600997795] [2020-09-25 06:43:22,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:22,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:22,128 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:43:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:24,481 INFO L93 Difference]: Finished difference Result 1555 states and 1945 transitions. [2020-09-25 06:43:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:24,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 06:43:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:24,489 INFO L225 Difference]: With dead ends: 1555 [2020-09-25 06:43:24,489 INFO L226 Difference]: Without dead ends: 976 [2020-09-25 06:43:24,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:43:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-09-25 06:43:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 908. [2020-09-25 06:43:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-09-25 06:43:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1107 transitions. [2020-09-25 06:43:24,549 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1107 transitions. Word has length 175 [2020-09-25 06:43:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:24,550 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1107 transitions. [2020-09-25 06:43:24,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1107 transitions. [2020-09-25 06:43:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:43:24,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:24,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:24,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:24,557 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 06:43:24,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:24,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120124024] [2020-09-25 06:43:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 06:43:29,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:43:29,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:43:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:29,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:43:29,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:29,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:43:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:43:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:29,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120124024] [2020-09-25 06:43:29,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:29,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:29,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268630448] [2020-09-25 06:43:29,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:29,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:29,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:29,914 INFO L87 Difference]: Start difference. First operand 908 states and 1107 transitions. Second operand 7 states. [2020-09-25 06:43:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:32,280 INFO L93 Difference]: Finished difference Result 2575 states and 3288 transitions. [2020-09-25 06:43:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:32,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 06:43:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:32,295 INFO L225 Difference]: With dead ends: 2575 [2020-09-25 06:43:32,301 INFO L226 Difference]: Without dead ends: 1691 [2020-09-25 06:43:32,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-25 06:43:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1568. [2020-09-25 06:43:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-09-25 06:43:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1937 transitions. [2020-09-25 06:43:32,396 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1937 transitions. Word has length 176 [2020-09-25 06:43:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:32,397 INFO L479 AbstractCegarLoop]: Abstraction has 1568 states and 1937 transitions. [2020-09-25 06:43:32,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1937 transitions. [2020-09-25 06:43:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 06:43:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:32,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:32,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:32,410 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:32,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 06:43:32,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:32,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472529832] [2020-09-25 06:43:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 06:43:37,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:43:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:43:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 06:43:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:43:37,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:37,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:43:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:37,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:43:37,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472529832] [2020-09-25 06:43:37,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:37,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:37,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804153941] [2020-09-25 06:43:37,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:37,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:37,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:37,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:37,943 INFO L87 Difference]: Start difference. First operand 1568 states and 1937 transitions. Second operand 5 states. [2020-09-25 06:43:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:39,951 INFO L93 Difference]: Finished difference Result 4142 states and 5289 transitions. [2020-09-25 06:43:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:39,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 06:43:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:39,973 INFO L225 Difference]: With dead ends: 4142 [2020-09-25 06:43:39,973 INFO L226 Difference]: Without dead ends: 2598 [2020-09-25 06:43:39,980 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 [2020-09-25 06:43:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2020-09-25 06:43:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2422. [2020-09-25 06:43:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-25 06:43:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3062 transitions. [2020-09-25 06:43:40,073 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3062 transitions. Word has length 183 [2020-09-25 06:43:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:40,074 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3062 transitions. [2020-09-25 06:43:40,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3062 transitions. [2020-09-25 06:43:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 06:43:40,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:40,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:40,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:40,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:40,087 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-25 06:43:40,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:40,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669070828] [2020-09-25 06:43:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 06:43:45,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:43:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:43:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:45,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:45,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:45,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:43:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:43:45,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:43:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:45,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669070828] [2020-09-25 06:43:45,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:45,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:45,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055442099] [2020-09-25 06:43:45,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:45,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:45,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:45,600 INFO L87 Difference]: Start difference. First operand 2422 states and 3062 transitions. Second operand 7 states. [2020-09-25 06:43:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:49,382 INFO L93 Difference]: Finished difference Result 6170 states and 8640 transitions. [2020-09-25 06:43:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:49,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 06:43:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:49,425 INFO L225 Difference]: With dead ends: 6170 [2020-09-25 06:43:49,426 INFO L226 Difference]: Without dead ends: 3772 [2020-09-25 06:43:49,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:43:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2020-09-25 06:43:49,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3257. [2020-09-25 06:43:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3257 states. [2020-09-25 06:43:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4064 transitions. [2020-09-25 06:43:49,627 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4064 transitions. Word has length 205 [2020-09-25 06:43:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:49,628 INFO L479 AbstractCegarLoop]: Abstraction has 3257 states and 4064 transitions. [2020-09-25 06:43:49,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4064 transitions. [2020-09-25 06:43:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 06:43:49,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:49,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:49,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:49,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -102390325, now seen corresponding path program 1 times [2020-09-25 06:43:49,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:49,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966444331] [2020-09-25 06:43:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking...