/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:04,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:04,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:04,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:04,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:04,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:04,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:04,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:04,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:04,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:04,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:04,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:04,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:04,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:04,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:04,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:04,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:04,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:04,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:04,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:04,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:04,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:04,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:04,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:04,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:04,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:04,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:04,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:04,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:04,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:04,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:04,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:04,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:04,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:04,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:04,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:04,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:04,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:04,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:04,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:04,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:04,168 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 07:51:04,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:04,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:04,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:04,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:04,198 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:04,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:04,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:04,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:04,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:04,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:04,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:04,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:04,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:04,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:04,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:04,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:04,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:04,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:04,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:04,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:04,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:04,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:04,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:04,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:04,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:04,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:04,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:04,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:04,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:04,203 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 07:51:04,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:04,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:04,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:04,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:04,705 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:04,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 07:51:04,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acd966560/c071006ec2064c6c8452e14b6b00c493/FLAG4edda45c0 [2020-09-25 07:51:05,428 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:05,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 07:51:05,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acd966560/c071006ec2064c6c8452e14b6b00c493/FLAG4edda45c0 [2020-09-25 07:51:05,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acd966560/c071006ec2064c6c8452e14b6b00c493 [2020-09-25 07:51:05,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:05,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:05,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:05,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:05,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:05,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:05" (1/1) ... [2020-09-25 07:51:05,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:05, skipping insertion in model container [2020-09-25 07:51:05,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:05" (1/1) ... [2020-09-25 07:51:05,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:05,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:06,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:06,403 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:06,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:06,631 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:06,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06 WrapperNode [2020-09-25 07:51:06,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:06,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:06,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:06,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:06,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... [2020-09-25 07:51:06,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:06,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:06,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:06,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:06,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:08,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:08,238 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:08,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:08 BoogieIcfgContainer [2020-09-25 07:51:08,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:08,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:08,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:08,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:08,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:05" (1/3) ... [2020-09-25 07:51:08,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:08, skipping insertion in model container [2020-09-25 07:51:08,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:06" (2/3) ... [2020-09-25 07:51:08,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:08, skipping insertion in model container [2020-09-25 07:51:08,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:08" (3/3) ... [2020-09-25 07:51:08,271 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 07:51:08,286 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:08,305 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:08,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:08,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:08,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:08,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:08,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:08,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:08,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:08,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:08,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:51:08,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:08,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:08,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 07:51:08,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:08,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 07:51:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:13,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 07:51:13,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:51:13,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:13,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:13,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 07:51:13,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:51:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:14,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:51:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:14,162 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 07:51:14,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 07:51:14,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:14,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:14,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356193771] [2020-09-25 07:51:14,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:14,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:14,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:14,200 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:16,466 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 07:51:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:16,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 07:51:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:16,495 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 07:51:16,495 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 07:51:16,510 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 07:51:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 07:51:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 07:51:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 07:51:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 07:51:16,618 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 07:51:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:16,619 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 07:51:16,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 07:51:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:51:16,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:16,629 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:16,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:16,629 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 07:51:16,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:16,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464462972] [2020-09-25 07:51:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:21,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:21,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:51:21,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:21,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:51:21,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:21,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:21,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 07:51:21,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:51:21,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:21,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:51:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:21,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:51:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:21,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:21,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:21,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:51:21,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:21,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:21,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464462972] [2020-09-25 07:51:21,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:21,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:51:21,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640096729] [2020-09-25 07:51:21,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:21,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:21,973 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 8 states. [2020-09-25 07:51:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:24,761 INFO L93 Difference]: Finished difference Result 1723 states and 2114 transitions. [2020-09-25 07:51:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:24,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 07:51:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:24,771 INFO L225 Difference]: With dead ends: 1723 [2020-09-25 07:51:24,771 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 07:51:24,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:51:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 07:51:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 952. [2020-09-25 07:51:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 07:51:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1181 transitions. [2020-09-25 07:51:24,831 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1181 transitions. Word has length 172 [2020-09-25 07:51:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:24,831 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1181 transitions. [2020-09-25 07:51:24,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:51:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1181 transitions. [2020-09-25 07:51:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 07:51:24,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:24,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:24,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:24,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:24,840 INFO L82 PathProgramCache]: Analyzing trace with hash 657710585, now seen corresponding path program 1 times [2020-09-25 07:51:24,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:24,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220497382] [2020-09-25 07:51:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 07:51:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:51:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:29,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:29,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:51:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:30,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:30,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:30,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:30,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:51:30,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:30,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:30,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:51:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 07:51:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:51:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:30,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220497382] [2020-09-25 07:51:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:30,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:30,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307480512] [2020-09-25 07:51:30,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:30,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:30,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:30,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:30,452 INFO L87 Difference]: Start difference. First operand 952 states and 1181 transitions. Second operand 7 states. [2020-09-25 07:51:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:33,290 INFO L93 Difference]: Finished difference Result 2262 states and 2933 transitions. [2020-09-25 07:51:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:51:33,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 07:51:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:33,313 INFO L225 Difference]: With dead ends: 2262 [2020-09-25 07:51:33,313 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 07:51:33,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:51:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 07:51:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1258. [2020-09-25 07:51:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 07:51:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1554 transitions. [2020-09-25 07:51:33,436 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1554 transitions. Word has length 201 [2020-09-25 07:51:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:33,438 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1554 transitions. [2020-09-25 07:51:33,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1554 transitions. [2020-09-25 07:51:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 07:51:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:33,448 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:33,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:33,449 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash 38975682, now seen corresponding path program 1 times [2020-09-25 07:51:33,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:33,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879105860] [2020-09-25 07:51:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 07:51:38,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:51:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 07:51:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:51:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:38,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:51:38,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:51:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:51:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:51:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:38,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:51:38,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:51:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:38,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:51:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:38,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879105860] [2020-09-25 07:51:38,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:38,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:38,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658970358] [2020-09-25 07:51:38,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:38,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:38,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:38,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:38,874 INFO L87 Difference]: Start difference. First operand 1258 states and 1554 transitions. Second operand 7 states. [2020-09-25 07:51:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:41,986 INFO L93 Difference]: Finished difference Result 2691 states and 3405 transitions. [2020-09-25 07:51:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:51:41,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 07:51:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:41,998 INFO L225 Difference]: With dead ends: 2691 [2020-09-25 07:51:41,998 INFO L226 Difference]: Without dead ends: 1441 [2020-09-25 07:51:42,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-09-25 07:51:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1393. [2020-09-25 07:51:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-09-25 07:51:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1687 transitions. [2020-09-25 07:51:42,065 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1687 transitions. Word has length 206 [2020-09-25 07:51:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:42,067 INFO L479 AbstractCegarLoop]: Abstraction has 1393 states and 1687 transitions. [2020-09-25 07:51:42,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1687 transitions. [2020-09-25 07:51:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 07:51:42,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:42,075 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:42,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:42,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -495080653, now seen corresponding path program 1 times [2020-09-25 07:51:42,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:42,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065559836] [2020-09-25 07:51:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:42,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 07:51:47,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:51:47,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 07:51:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:51:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:47,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:51:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:51:47,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:51:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:51:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 07:51:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:47,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065559836] [2020-09-25 07:51:47,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:47,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:47,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375061482] [2020-09-25 07:51:47,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:47,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:47,428 INFO L87 Difference]: Start difference. First operand 1393 states and 1687 transitions. Second operand 7 states. [2020-09-25 07:51:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:49,481 INFO L93 Difference]: Finished difference Result 2461 states and 2939 transitions. [2020-09-25 07:51:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:51:49,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 07:51:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:49,490 INFO L225 Difference]: With dead ends: 2461 [2020-09-25 07:51:49,490 INFO L226 Difference]: Without dead ends: 1567 [2020-09-25 07:51:49,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:51:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2020-09-25 07:51:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1546. [2020-09-25 07:51:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-25 07:51:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1857 transitions. [2020-09-25 07:51:49,542 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1857 transitions. Word has length 210 [2020-09-25 07:51:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:49,543 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 1857 transitions. [2020-09-25 07:51:49,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1857 transitions. [2020-09-25 07:51:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 07:51:49,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:49,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:49,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:49,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:49,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1959609365, now seen corresponding path program 1 times [2020-09-25 07:51:49,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:49,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686934386] [2020-09-25 07:51:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking...