/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=0.4 --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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:18,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:18,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:18,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:18,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:18,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:18,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:18,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:18,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:18,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:18,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:18,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:18,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:18,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:18,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:18,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:18,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:18,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:18,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:18,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:18,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:18,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:18,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:18,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:18,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:18,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:18,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:18,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:18,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:18,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:18,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:18,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:18,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:18,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:18,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:18,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:18,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:18,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:18,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:18,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:18,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:18,178 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 05:34:18,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:18,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:18,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:18,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:18,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:18,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:18,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:18,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:18,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:18,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:18,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:18,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:18,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:18,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:18,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:18,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:18,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:18,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:18,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:18,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:18,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:18,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:18,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:18,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:18,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:18,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:18,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:18,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:18,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:18,230 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:34:18,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:18,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:18,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:18,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:18,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:18,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 05:34:18,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94157d593/a578c72e2a484e059c83fb8fba86d917/FLAG99b64c23a [2020-09-25 05:34:19,556 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:19,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 05:34:19,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94157d593/a578c72e2a484e059c83fb8fba86d917/FLAG99b64c23a [2020-09-25 05:34:19,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94157d593/a578c72e2a484e059c83fb8fba86d917 [2020-09-25 05:34:19,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:19,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:19,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:19,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:19,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:19,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:19" (1/1) ... [2020-09-25 05:34:19,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97719e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:19, skipping insertion in model container [2020-09-25 05:34:19,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:19" (1/1) ... [2020-09-25 05:34:19,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:19,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:20,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:20,389 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:20,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:20,647 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:20,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20 WrapperNode [2020-09-25 05:34:20,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:20,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:20,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:20,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:20,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (1/1) ... [2020-09-25 05:34:20,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:20,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:20,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:20,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:20,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (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 05:34:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:22,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:22,222 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:22,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:22 BoogieIcfgContainer [2020-09-25 05:34:22,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:22,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:22,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:22,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:22,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:19" (1/3) ... [2020-09-25 05:34:22,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4693934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:22, skipping insertion in model container [2020-09-25 05:34:22,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:20" (2/3) ... [2020-09-25 05:34:22,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4693934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:22, skipping insertion in model container [2020-09-25 05:34:22,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:22" (3/3) ... [2020-09-25 05:34:22,242 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 05:34:22,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:22,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:22,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:22,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:22,327 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:22,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:22,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:22,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:22,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:22,328 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:22,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:34:22,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:22,387 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] [2020-09-25 05:34:22,388 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 05:34:22,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:22,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763661045] [2020-09-25 05:34:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:27,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 05:34:27,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:34:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:34:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:27,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 05:34:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:27,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:34:27,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:27,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:28,018 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 05:34:28,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763661045] [2020-09-25 05:34:28,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:28,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:28,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14319951] [2020-09-25 05:34:28,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:28,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:28,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:28,051 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:30,191 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 05:34:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:30,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 05:34:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:30,221 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 05:34:30,222 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 05:34:30,233 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 05:34:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 05:34:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 05:34:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 05:34:30,344 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 05:34:30,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:30,345 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 05:34:30,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 05:34:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:34:30,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:30,355 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] [2020-09-25 05:34:30,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:30,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 05:34:30,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:30,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028305418] [2020-09-25 05:34:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:35,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:35,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:34:35,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:35,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:34:35,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:35,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:34:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:35,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:35,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:34:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:34:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:35,717 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 05:34:35,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028305418] [2020-09-25 05:34:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:35,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:35,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694783643] [2020-09-25 05:34:35,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:35,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:35,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:35,725 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 7 states. [2020-09-25 05:34:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:38,199 INFO L93 Difference]: Finished difference Result 1653 states and 2070 transitions. [2020-09-25 05:34:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:38,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 05:34:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:38,208 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 05:34:38,208 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 05:34:38,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 05:34:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 973. [2020-09-25 05:34:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-25 05:34:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1199 transitions. [2020-09-25 05:34:38,260 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1199 transitions. Word has length 162 [2020-09-25 05:34:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:38,260 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1199 transitions. [2020-09-25 05:34:38,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1199 transitions. [2020-09-25 05:34:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 05:34:38,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:38,266 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] [2020-09-25 05:34:38,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:38,267 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 05:34:38,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:38,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136800864] [2020-09-25 05:34:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:43,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 05:34:43,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:34:43,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:43,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:34:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:34:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:34:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:43,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:43,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:43,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:34:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:43,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:43,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136800864] [2020-09-25 05:34:43,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:43,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:34:43,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211228399] [2020-09-25 05:34:43,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:34:43,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:34:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:43,643 INFO L87 Difference]: Start difference. First operand 973 states and 1199 transitions. Second operand 6 states. [2020-09-25 05:34:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:46,204 INFO L93 Difference]: Finished difference Result 2832 states and 3680 transitions. [2020-09-25 05:34:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:34:46,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 05:34:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:46,216 INFO L225 Difference]: With dead ends: 2832 [2020-09-25 05:34:46,216 INFO L226 Difference]: Without dead ends: 1883 [2020-09-25 05:34:46,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2020-09-25 05:34:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1690. [2020-09-25 05:34:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-09-25 05:34:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2174 transitions. [2020-09-25 05:34:46,291 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2174 transitions. Word has length 169 [2020-09-25 05:34:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:46,292 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2174 transitions. [2020-09-25 05:34:46,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:34:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2174 transitions. [2020-09-25 05:34:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 05:34:46,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:46,305 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:46,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:46,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1796474422, now seen corresponding path program 1 times [2020-09-25 05:34:46,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:46,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087920774] [2020-09-25 05:34:46,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:51,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 05:34:51,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:51,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:34:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:51,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:51,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:51,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:34:51,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:51,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:51,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:34:51,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:34:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:51,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:51,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087920774] [2020-09-25 05:34:51,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:51,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:51,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863862193] [2020-09-25 05:34:51,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:51,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:51,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:51,760 INFO L87 Difference]: Start difference. First operand 1690 states and 2174 transitions. Second operand 7 states. [2020-09-25 05:34:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:54,171 INFO L93 Difference]: Finished difference Result 3631 states and 4762 transitions. [2020-09-25 05:34:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:54,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-25 05:34:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:54,191 INFO L225 Difference]: With dead ends: 3631 [2020-09-25 05:34:54,192 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 05:34:54,201 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 [2020-09-25 05:34:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 05:34:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1733. [2020-09-25 05:34:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-09-25 05:34:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2224 transitions. [2020-09-25 05:34:54,284 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2224 transitions. Word has length 194 [2020-09-25 05:34:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:54,285 INFO L479 AbstractCegarLoop]: Abstraction has 1733 states and 2224 transitions. [2020-09-25 05:34:54,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2224 transitions. [2020-09-25 05:34:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 05:34:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:54,295 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:54,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:54,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 382333289, now seen corresponding path program 1 times [2020-09-25 05:34:54,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:54,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774748306] [2020-09-25 05:34:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:34:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:34:59,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:34:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:34:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:59,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:34:59,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:59,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:59,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:34:59,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:34:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:34:59,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:59,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:59,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774748306] [2020-09-25 05:34:59,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:59,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:34:59,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739618049] [2020-09-25 05:34:59,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:59,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:59,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:59,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:59,757 INFO L87 Difference]: Start difference. First operand 1733 states and 2224 transitions. Second operand 8 states. [2020-09-25 05:35:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:02,418 INFO L93 Difference]: Finished difference Result 5246 states and 7059 transitions. [2020-09-25 05:35:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:35:02,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-25 05:35:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:02,439 INFO L225 Difference]: With dead ends: 5246 [2020-09-25 05:35:02,439 INFO L226 Difference]: Without dead ends: 3537 [2020-09-25 05:35:02,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:35:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2020-09-25 05:35:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 2524. [2020-09-25 05:35:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2524 states. [2020-09-25 05:35:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3191 transitions. [2020-09-25 05:35:02,555 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3191 transitions. Word has length 201 [2020-09-25 05:35:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:02,556 INFO L479 AbstractCegarLoop]: Abstraction has 2524 states and 3191 transitions. [2020-09-25 05:35:02,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3191 transitions. [2020-09-25 05:35:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 05:35:02,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:02,570 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:02,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:02,570 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:02,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1856671123, now seen corresponding path program 1 times [2020-09-25 05:35:02,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:02,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004576464] [2020-09-25 05:35:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 05:35:07,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:35:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 05:35:07,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:35:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:35:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:35:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:07,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:35:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:07,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1