/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=SMALLEST --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/Problem02_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:08,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:08,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:08,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:08,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:08,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:08,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:08,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:08,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:08,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:08,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:08,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:08,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:08,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:08,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:08,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:08,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:08,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:08,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:08,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:08,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:08,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:08,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:08,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:08,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:08,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:08,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:08,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:08,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:08,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:08,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:08,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:08,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:08,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:08,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:08,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:08,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:08,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:08,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:08,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:08,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:08,212 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 [2020-09-24 18:22:08,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:08,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:08,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:08,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:08,241 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:08,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:08,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:08,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:08,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:08,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:08,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:08,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:08,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:08,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:08,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:08,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:08,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:08,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:08,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:08,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:08,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:08,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:08,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:08,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:08,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:08,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:08,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:08,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:08,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:08,249 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:22:08,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:08,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:08,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:08,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:08,753 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:08,754 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-24 18:22:08,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b88d82c8c/a2f97e2e982e4a27b48310154c49e8ed/FLAG9e5b05643 [2020-09-24 18:22:09,486 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:09,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-24 18:22:09,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b88d82c8c/a2f97e2e982e4a27b48310154c49e8ed/FLAG9e5b05643 [2020-09-24 18:22:09,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b88d82c8c/a2f97e2e982e4a27b48310154c49e8ed [2020-09-24 18:22:09,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:09,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:09,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:09,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:09,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:09,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:09" (1/1) ... [2020-09-24 18:22:09,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:09, skipping insertion in model container [2020-09-24 18:22:09,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:09" (1/1) ... [2020-09-24 18:22:09,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:09,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:10,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:10,301 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:10,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:10,563 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:10,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10 WrapperNode [2020-09-24 18:22:10,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:10,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:10,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:10,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:10,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (1/1) ... [2020-09-24 18:22:10,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:10,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:10,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:10,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:10,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (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 [2020-09-24 18:22:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:12,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:12,102 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:12,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:12 BoogieIcfgContainer [2020-09-24 18:22:12,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:12,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:12,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:12,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:12,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:09" (1/3) ... [2020-09-24 18:22:12,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:12, skipping insertion in model container [2020-09-24 18:22:12,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:10" (2/3) ... [2020-09-24 18:22:12,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:12, skipping insertion in model container [2020-09-24 18:22:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:12" (3/3) ... [2020-09-24 18:22:12,121 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-24 18:22:12,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:12,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:12,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:12,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:12,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:12,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:12,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:12,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:12,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:12,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:12,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 18:22:12,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:12,254 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] [2020-09-24 18:22:12,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:12,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-24 18:22:12,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:12,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-24 18:22:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:22:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:22:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:22:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 18:22:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:22:17,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:17,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:17,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:22:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:22:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:17,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-24 18:22:17,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:17,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:17,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177354681] [2020-09-24 18:22:17,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:17,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:17,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:17,861 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:20,056 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:22:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:20,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-24 18:22:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:20,090 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:22:20,090 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:22:20,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:22:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:22:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:22:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:22:20,196 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 122 [2020-09-24 18:22:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:20,197 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:22:20,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:22:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 18:22:20,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:20,205 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] [2020-09-24 18:22:20,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:20,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:20,206 INFO L82 PathProgramCache]: Analyzing trace with hash 292586698, now seen corresponding path program 1 times [2020-09-24 18:22:20,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:20,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435723629] [2020-09-24 18:22:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:22:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:22:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:22:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:22:25,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:25,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:22:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:22:25,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:22:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:25,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435723629] [2020-09-24 18:22:25,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:25,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:25,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019659303] [2020-09-24 18:22:25,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:25,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:25,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:25,495 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:22:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:27,791 INFO L93 Difference]: Finished difference Result 1623 states and 1947 transitions. [2020-09-24 18:22:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:27,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-24 18:22:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:27,803 INFO L225 Difference]: With dead ends: 1623 [2020-09-24 18:22:27,803 INFO L226 Difference]: Without dead ends: 1024 [2020-09-24 18:22:27,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-24 18:22:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 927. [2020-09-24 18:22:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-09-24 18:22:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1114 transitions. [2020-09-24 18:22:27,864 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1114 transitions. Word has length 139 [2020-09-24 18:22:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:27,865 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1114 transitions. [2020-09-24 18:22:27,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1114 transitions. [2020-09-24 18:22:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 18:22:27,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:27,870 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] [2020-09-24 18:22:27,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:27,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1023468109, now seen corresponding path program 1 times [2020-09-24 18:22:27,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:27,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210547371] [2020-09-24 18:22:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:27,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:22:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 18:22:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:22:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:22:33,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:33,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210547371] [2020-09-24 18:22:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:33,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:33,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172105781] [2020-09-24 18:22:33,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:33,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:33,142 INFO L87 Difference]: Start difference. First operand 927 states and 1114 transitions. Second operand 5 states. [2020-09-24 18:22:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:35,009 INFO L93 Difference]: Finished difference Result 2163 states and 2713 transitions. [2020-09-24 18:22:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:35,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-24 18:22:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:35,020 INFO L225 Difference]: With dead ends: 2163 [2020-09-24 18:22:35,020 INFO L226 Difference]: Without dead ends: 1258 [2020-09-24 18:22:35,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-09-24 18:22:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1231. [2020-09-24 18:22:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-09-24 18:22:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1463 transitions. [2020-09-24 18:22:35,087 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1463 transitions. Word has length 144 [2020-09-24 18:22:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:35,092 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1463 transitions. [2020-09-24 18:22:35,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1463 transitions. [2020-09-24 18:22:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 18:22:35,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:35,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:35,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:22:35,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1719779806, now seen corresponding path program 1 times [2020-09-24 18:22:35,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:35,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14873979] [2020-09-24 18:22:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 18:22:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 18:22:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:22:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:22:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:22:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:40,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:40,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:40,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:22:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:22:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:22:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:22:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:22:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:22:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:22:40,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14873979] [2020-09-24 18:22:40,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:40,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:40,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433612959] [2020-09-24 18:22:40,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:40,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:40,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:40,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:40,365 INFO L87 Difference]: Start difference. First operand 1231 states and 1463 transitions. Second operand 7 states. [2020-09-24 18:22:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:43,232 INFO L93 Difference]: Finished difference Result 2843 states and 3574 transitions. [2020-09-24 18:22:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:22:43,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-24 18:22:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:43,246 INFO L225 Difference]: With dead ends: 2843 [2020-09-24 18:22:43,247 INFO L226 Difference]: Without dead ends: 1634 [2020-09-24 18:22:43,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-09-24 18:22:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1566. [2020-09-24 18:22:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-24 18:22:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1851 transitions. [2020-09-24 18:22:43,325 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1851 transitions. Word has length 157 [2020-09-24 18:22:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:43,326 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1851 transitions. [2020-09-24 18:22:43,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1851 transitions. [2020-09-24 18:22:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:22:43,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:43,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:43,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:43,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1504150239, now seen corresponding path program 1 times [2020-09-24 18:22:43,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:43,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789414680] [2020-09-24 18:22:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:22:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:22:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:22:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 18:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:22:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:48,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:48,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:48,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:22:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:22:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:22:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:22:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:48,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789414680] [2020-09-24 18:22:48,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:48,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:48,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039605135] [2020-09-24 18:22:48,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:48,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:48,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:48,766 INFO L87 Difference]: Start difference. First operand 1566 states and 1851 transitions. Second operand 5 states. [2020-09-24 18:22:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:50,518 INFO L93 Difference]: Finished difference Result 3451 states and 4237 transitions. [2020-09-24 18:22:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:50,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-24 18:22:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:50,529 INFO L225 Difference]: With dead ends: 3451 [2020-09-24 18:22:50,529 INFO L226 Difference]: Without dead ends: 1907 [2020-09-24 18:22:50,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-09-24 18:22:50,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1872. [2020-09-24 18:22:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-09-24 18:22:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2298 transitions. [2020-09-24 18:22:50,602 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2298 transitions. Word has length 165 [2020-09-24 18:22:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:50,602 INFO L479 AbstractCegarLoop]: Abstraction has 1872 states and 2298 transitions. [2020-09-24 18:22:50,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2298 transitions. [2020-09-24 18:22:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 18:22:50,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:50,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:22:50,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:50,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1175488116, now seen corresponding path program 1 times [2020-09-24 18:22:50,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:50,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490184629] [2020-09-24 18:22:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 18:22:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 18:22:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:55,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:55,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:55,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:22:55,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:55,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:55,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:22:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:55,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 18:22:55,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 18:22:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:55,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 18:22:55,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0