/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=SMALLESTAMONGWIDE --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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:26,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:26,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:26,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:26,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:26,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:26,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:26,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:26,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:26,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:26,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:26,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:26,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:26,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:26,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:26,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:26,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:26,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:26,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:26,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:26,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:26,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:26,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:26,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:26,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:26,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:26,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:26,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:26,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:26,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:26,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:26,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:26,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:26,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:26,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:26,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:26,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:26,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:26,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:26,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:26,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:26,192 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 13:30:26,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:26,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:26,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:26,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:26,222 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:26,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:26,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:26,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:26,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:26,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:26,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:26,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:26,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:26,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:26,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:26,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:26,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:26,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:26,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:26,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:26,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:26,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:26,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:26,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:26,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:26,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:26,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:26,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:26,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:26,227 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:26,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:26,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:26,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:26,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:26,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:26,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 13:30:26,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e14a5bc5c/4800cd8afddf4828bb76b5345256ffb5/FLAG538e96698 [2020-09-25 13:30:27,461 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:27,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 13:30:27,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e14a5bc5c/4800cd8afddf4828bb76b5345256ffb5/FLAG538e96698 [2020-09-25 13:30:27,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e14a5bc5c/4800cd8afddf4828bb76b5345256ffb5 [2020-09-25 13:30:27,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:27,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:27,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:27,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:27,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:27,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:27" (1/1) ... [2020-09-25 13:30:27,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68717dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:27, skipping insertion in model container [2020-09-25 13:30:27,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:27" (1/1) ... [2020-09-25 13:30:27,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:27,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:28,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:28,482 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:28,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:28,620 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:28,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28 WrapperNode [2020-09-25 13:30:28,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:28,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:28,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:28,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:28,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (1/1) ... [2020-09-25 13:30:28,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:28,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:28,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:28,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:28,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (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 13:30:28,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:28,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:28,829 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:28,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:30,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:30,204 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:30,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:30 BoogieIcfgContainer [2020-09-25 13:30:30,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:30,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:30,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:30,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:30,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:27" (1/3) ... [2020-09-25 13:30:30,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ad08d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:30, skipping insertion in model container [2020-09-25 13:30:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:28" (2/3) ... [2020-09-25 13:30:30,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ad08d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:30, skipping insertion in model container [2020-09-25 13:30:30,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:30" (3/3) ... [2020-09-25 13:30:30,233 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 13:30:30,245 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:30,262 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:30,289 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:30,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:30,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:30,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:30,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:30,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:30,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:30,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:30,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 13:30:30,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:30,428 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] [2020-09-25 13:30:30,429 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 13:30:30,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:30,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751079880] [2020-09-25 13:30:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:35,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 13:30:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:30:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:30:35,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:30:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:30:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:30:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:35,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:30:35,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:35,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:36,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:36,057 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 13:30:36,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751079880] [2020-09-25 13:30:36,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:36,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:36,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780261391] [2020-09-25 13:30:36,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:36,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:36,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:36,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:36,087 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:30:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:38,256 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 13:30:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:38,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 13:30:38,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:38,297 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 13:30:38,297 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 13:30:38,306 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 13:30:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 13:30:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 13:30:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:30:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 13:30:38,424 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 13:30:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:38,425 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 13:30:38,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 13:30:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 13:30:38,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:38,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:38,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:38,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:38,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:38,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 13:30:38,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:38,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140211526] [2020-09-25 13:30:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:43,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:30:43,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:30:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:30:43,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:43,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:30:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:30:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:30:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:44,313 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-09-25 13:30:44,488 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2020-09-25 13:30:44,625 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-09-25 13:30:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:30:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:30:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:45,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:45,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140211526] [2020-09-25 13:30:45,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:45,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:30:45,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501291810] [2020-09-25 13:30:45,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:30:45,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:45,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:30:45,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:30:45,279 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 14 states. [2020-09-25 13:30:46,011 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:46,193 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 13:30:46,632 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-09-25 13:30:47,190 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-09-25 13:30:47,595 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-09-25 13:30:47,821 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-09-25 13:30:48,635 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-09-25 13:30:49,503 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-09-25 13:30:50,008 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-09-25 13:30:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:50,195 INFO L93 Difference]: Finished difference Result 1284 states and 1593 transitions. [2020-09-25 13:30:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:30:50,196 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 148 [2020-09-25 13:30:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:50,202 INFO L225 Difference]: With dead ends: 1284 [2020-09-25 13:30:50,202 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 13:30:50,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:30:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 13:30:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 684. [2020-09-25 13:30:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-25 13:30:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 809 transitions. [2020-09-25 13:30:50,255 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 809 transitions. Word has length 148 [2020-09-25 13:30:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:50,256 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 809 transitions. [2020-09-25 13:30:50,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:30:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 809 transitions. [2020-09-25 13:30:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 13:30:50,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:50,260 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] [2020-09-25 13:30:50,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:50,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 13:30:50,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:50,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256864421] [2020-09-25 13:30:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:51,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 13:30:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:30:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:55,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:30:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:30:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:30:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:55,828 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-09-25 13:30:56,111 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-09-25 13:30:56,258 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-25 13:30:56,388 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-09-25 13:30:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:56,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:56,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:30:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 13:30:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:56,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:30:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:57,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256864421] [2020-09-25 13:30:57,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:57,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 13:30:57,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290723246] [2020-09-25 13:30:57,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 13:30:57,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:57,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 13:30:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:30:57,527 INFO L87 Difference]: Start difference. First operand 684 states and 809 transitions. Second operand 20 states. [2020-09-25 13:30:58,933 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-09-25 13:30:59,347 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-09-25 13:30:59,722 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 13:31:00,116 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 13:31:00,539 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-09-25 13:31:01,208 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2020-09-25 13:31:01,702 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-09-25 13:31:02,868 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-25 13:31:03,397 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-09-25 13:31:03,805 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2020-09-25 13:31:04,029 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-25 13:31:04,445 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-09-25 13:31:05,584 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 13:31:06,002 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-25 13:31:06,621 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2020-09-25 13:31:07,569 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-09-25 13:31:07,855 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-09-25 13:31:08,787 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-09-25 13:31:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:10,210 INFO L93 Difference]: Finished difference Result 2212 states and 2816 transitions. [2020-09-25 13:31:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 13:31:10,211 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2020-09-25 13:31:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:10,229 INFO L225 Difference]: With dead ends: 2212 [2020-09-25 13:31:10,230 INFO L226 Difference]: Without dead ends: 1552 [2020-09-25 13:31:10,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 13:31:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-25 13:31:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1282. [2020-09-25 13:31:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-09-25 13:31:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1522 transitions. [2020-09-25 13:31:10,300 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1522 transitions. Word has length 149 [2020-09-25 13:31:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:10,302 INFO L479 AbstractCegarLoop]: Abstraction has 1282 states and 1522 transitions. [2020-09-25 13:31:10,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 13:31:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1522 transitions. [2020-09-25 13:31:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:31:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:10,312 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] [2020-09-25 13:31:10,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:10,313 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash -572807862, now seen corresponding path program 1 times [2020-09-25 13:31:10,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:10,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000148111] [2020-09-25 13:31:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:31:15,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:31:15,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:31:15,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 13:31:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 13:31:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:31:15,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:15,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:15,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:31:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:15,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:31:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:31:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,612 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 13:31:15,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000148111] [2020-09-25 13:31:15,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:15,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:15,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740299396] [2020-09-25 13:31:15,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:15,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:15,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:15,618 INFO L87 Difference]: Start difference. First operand 1282 states and 1522 transitions. Second operand 5 states. [2020-09-25 13:31:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:17,506 INFO L93 Difference]: Finished difference Result 2572 states and 3071 transitions. [2020-09-25 13:31:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:17,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 13:31:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:17,517 INFO L225 Difference]: With dead ends: 2572 [2020-09-25 13:31:17,517 INFO L226 Difference]: Without dead ends: 1314 [2020-09-25 13:31:17,521 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 13:31:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-09-25 13:31:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1258. [2020-09-25 13:31:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 13:31:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1460 transitions. [2020-09-25 13:31:17,561 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1460 transitions. Word has length 156 [2020-09-25 13:31:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:17,562 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1460 transitions. [2020-09-25 13:31:17,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1460 transitions. [2020-09-25 13:31:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:31:17,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:17,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:17,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:17,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1027445840, now seen corresponding path program 1 times [2020-09-25 13:31:17,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:17,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156240060] [2020-09-25 13:31:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking...