/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=0.8 --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:10,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:10,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:10,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:10,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:10,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:10,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:10,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:10,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:10,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:10,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:10,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:10,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:10,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:10,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:10,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:10,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:10,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:10,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:10,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:10,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:10,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:10,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:10,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:10,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:10,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:10,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:10,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:10,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:10,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:10,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:10,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:10,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:10,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:10,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:10,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:10,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:10,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:10,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:10,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:10,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:10,177 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 07:51:10,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:10,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:10,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:10,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:10,205 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:10,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:10,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:10,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:10,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:10,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:10,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:10,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:10,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:10,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:10,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:10,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:10,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:10,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:10,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:10,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:10,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:10,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:10,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:10,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:10,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:10,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:10,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:10,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:10,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:10,211 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:51:10,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:10,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:10,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:10,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:10,691 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:10,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 07:51:10,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b4c1a38/62ab6438427b421085b344dc4ad54d9e/FLAG0fed084fb [2020-09-25 07:51:11,454 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:11,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 07:51:11,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b4c1a38/62ab6438427b421085b344dc4ad54d9e/FLAG0fed084fb [2020-09-25 07:51:11,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b4c1a38/62ab6438427b421085b344dc4ad54d9e [2020-09-25 07:51:11,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:11,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:11,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:11,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:11,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:11,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:11" (1/1) ... [2020-09-25 07:51:11,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618e0139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:11, skipping insertion in model container [2020-09-25 07:51:11,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:11" (1/1) ... [2020-09-25 07:51:11,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:11,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:12,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:12,425 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:12,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:12,578 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:12,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12 WrapperNode [2020-09-25 07:51:12,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:12,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:12,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:12,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:12,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:12,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:12,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:12,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:12,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (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 07:51:12,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:12,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:14,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:14,190 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:14,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:14 BoogieIcfgContainer [2020-09-25 07:51:14,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:14,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:14,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:14,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:14,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:11" (1/3) ... [2020-09-25 07:51:14,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60238a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:14, skipping insertion in model container [2020-09-25 07:51:14,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (2/3) ... [2020-09-25 07:51:14,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60238a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:14, skipping insertion in model container [2020-09-25 07:51:14,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:14" (3/3) ... [2020-09-25 07:51:14,210 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 07:51:14,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:14,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:14,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:14,298 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:14,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:14,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:14,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:14,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:14,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:14,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:14,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 07:51:14,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:14,355 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] [2020-09-25 07:51:14,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 07:51:14,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:14,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965939843] [2020-09-25 07:51:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:19,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 07:51:19,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:51:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:51:19,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:19,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:19,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 07:51:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:51:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:19,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:19,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:51:19,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:19,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:19,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:20,017 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 07:51:20,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965939843] [2020-09-25 07:51:20,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:20,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:20,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342374678] [2020-09-25 07:51:20,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:20,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:20,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:20,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:20,049 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:22,107 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 07:51:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:22,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 07:51:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:22,149 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 07:51:22,149 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 07:51:22,159 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 07:51:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 07:51:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 07:51:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 07:51:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 07:51:22,270 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 07:51:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:22,271 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 07:51:22,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 07:51:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:51:22,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:22,280 INFO L422 BasicCegarLoop]: trace histogram [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 07:51:22,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:22,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:22,281 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 07:51:22,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:22,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649507544] [2020-09-25 07:51:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:27,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:51:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:51:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:51:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:51:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 07:51:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:27,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:27,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:27,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 07:51:27,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:27,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:51:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:28,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649507544] [2020-09-25 07:51:28,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:28,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:51:28,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201579956] [2020-09-25 07:51:28,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:51:28,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:28,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:51:28,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:51:28,240 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 07:51:29,140 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-25 07:51:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:33,562 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 07:51:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:51:33,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 07:51:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:33,571 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 07:51:33,571 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 07:51:33,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:51:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 07:51:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 07:51:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 07:51:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 07:51:33,626 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 165 [2020-09-25 07:51:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:33,626 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 07:51:33,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:51:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 07:51:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:51:33,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:33,631 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:51:33,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:33,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash -289310937, now seen corresponding path program 1 times [2020-09-25 07:51:33,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:33,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123110118] [2020-09-25 07:51:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 07:51:38,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:51:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:51:38,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:51:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:51:38,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:38,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:38,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:38,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:38,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:51:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:51:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:51:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:39,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123110118] [2020-09-25 07:51:39,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:39,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:39,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812894509] [2020-09-25 07:51:39,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:39,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:39,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:39,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:39,027 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 07:51:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:41,180 INFO L93 Difference]: Finished difference Result 2435 states and 2832 transitions. [2020-09-25 07:51:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:41,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 07:51:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:41,196 INFO L225 Difference]: With dead ends: 2435 [2020-09-25 07:51:41,196 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 07:51:41,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 07:51:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1193. [2020-09-25 07:51:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 07:51:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1358 transitions. [2020-09-25 07:51:41,251 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1358 transitions. Word has length 170 [2020-09-25 07:51:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:41,253 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1358 transitions. [2020-09-25 07:51:41,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1358 transitions. [2020-09-25 07:51:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:51:41,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:41,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:41,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:41,268 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:41,268 INFO L82 PathProgramCache]: Analyzing trace with hash -64061830, now seen corresponding path program 1 times [2020-09-25 07:51:41,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:41,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368477943] [2020-09-25 07:51:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 07:51:46,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:51:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:51:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 07:51:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 07:51:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:46,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:51:46,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:46,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:46,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:51:46,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 07:51:46,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:46,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:51:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:46,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368477943] [2020-09-25 07:51:46,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:46,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:46,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052834306] [2020-09-25 07:51:46,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:46,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:46,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:46,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:46,694 INFO L87 Difference]: Start difference. First operand 1193 states and 1358 transitions. Second operand 5 states. [2020-09-25 07:51:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:48,547 INFO L93 Difference]: Finished difference Result 3002 states and 3516 transitions. [2020-09-25 07:51:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:48,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 07:51:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:48,557 INFO L225 Difference]: With dead ends: 3002 [2020-09-25 07:51:48,558 INFO L226 Difference]: Without dead ends: 1833 [2020-09-25 07:51:48,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-09-25 07:51:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1487. [2020-09-25 07:51:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 07:51:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1737 transitions. [2020-09-25 07:51:48,610 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1737 transitions. Word has length 191 [2020-09-25 07:51:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:48,610 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1737 transitions. [2020-09-25 07:51:48,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1737 transitions. [2020-09-25 07:51:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 07:51:48,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:48,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:48,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:48,619 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:48,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:48,620 INFO L82 PathProgramCache]: Analyzing trace with hash -656669948, now seen corresponding path program 1 times [2020-09-25 07:51:48,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:48,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644677638] [2020-09-25 07:51:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:53,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:53,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 07:51:53,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:51:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 07:51:53,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:53,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:51:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 07:51:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:51:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:51:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:51:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:53,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:51:53,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:54,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:54,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:54,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:51:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:54,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 07:51:54,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644677638] [2020-09-25 07:51:54,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:54,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:51:54,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313185910] [2020-09-25 07:51:54,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:51:54,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:54,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:51:54,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:54,160 INFO L87 Difference]: Start difference. First operand 1487 states and 1737 transitions. Second operand 6 states. [2020-09-25 07:51:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:56,007 INFO L93 Difference]: Finished difference Result 4187 states and 5017 transitions. [2020-09-25 07:51:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:56,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 07:51:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:56,025 INFO L225 Difference]: With dead ends: 4187 [2020-09-25 07:51:56,026 INFO L226 Difference]: Without dead ends: 2724 [2020-09-25 07:51:56,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2020-09-25 07:51:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2349. [2020-09-25 07:51:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-09-25 07:51:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 2823 transitions. [2020-09-25 07:51:56,130 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 2823 transitions. Word has length 203 [2020-09-25 07:51:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:56,130 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 2823 transitions. [2020-09-25 07:51:56,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:51:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 2823 transitions. [2020-09-25 07:51:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 07:51:56,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:56,141 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:56,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:56,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1609805328, now seen corresponding path program 1 times [2020-09-25 07:51:56,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:56,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45918893] [2020-09-25 07:51:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking...