/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:53,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:53,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:53,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:53,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:53,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:53,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:53,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:53,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:53,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:53,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:53,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:53,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:53,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:53,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:53,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:53,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:53,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:53,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:53,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:53,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:53,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:53,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:53,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:53,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:53,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:53,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:53,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:53,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:53,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:53,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:53,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:53,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:53,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:53,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:53,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:53,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:53,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:53,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:53,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:53,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:53,191 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 12:27:53,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:53,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:53,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:53,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:53,240 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:53,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:53,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:53,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:53,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:53,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:53,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:53,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:53,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:53,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:53,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:53,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:53,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:53,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:53,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:53,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:53,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:53,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:53,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:53,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:53,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:53,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:53,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:53,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:53,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:53,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:53,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:53,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:53,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:53,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:53,757 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:53,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 12:27:53,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf83fa9fb/53192e5fa443491aa27720617e442968/FLAGba116fe00 [2020-09-25 12:27:54,589 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:54,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 12:27:54,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf83fa9fb/53192e5fa443491aa27720617e442968/FLAGba116fe00 [2020-09-25 12:27:54,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf83fa9fb/53192e5fa443491aa27720617e442968 [2020-09-25 12:27:54,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:54,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:54,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:54,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:54,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:54,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:54" (1/1) ... [2020-09-25 12:27:54,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8d7102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:54, skipping insertion in model container [2020-09-25 12:27:54,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:54" (1/1) ... [2020-09-25 12:27:54,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:54,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:55,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:55,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:56,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:56,047 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:56,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56 WrapperNode [2020-09-25 12:27:56,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:56,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:56,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:56,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:56,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (1/1) ... [2020-09-25 12:27:56,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:56,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:56,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:56,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:56,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (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 12:27:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:58,860 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:58,861 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:58,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:58 BoogieIcfgContainer [2020-09-25 12:27:58,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:58,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:58,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:58,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:58,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:54" (1/3) ... [2020-09-25 12:27:58,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce73206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:58, skipping insertion in model container [2020-09-25 12:27:58,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:56" (2/3) ... [2020-09-25 12:27:58,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce73206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:58, skipping insertion in model container [2020-09-25 12:27:58,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:58" (3/3) ... [2020-09-25 12:27:58,883 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 12:27:58,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:58,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:58,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:58,968 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:58,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:58,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:58,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:58,969 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:58,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:58,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:58,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 12:27:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 12:27:59,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:59,020 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] [2020-09-25 12:27:59,020 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 12:27:59,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:59,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792677448] [2020-09-25 12:27:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:00,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:28:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-25 12:28:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:28:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:00,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:28:00,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:00,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:00,424 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 12:28:00,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792677448] [2020-09-25 12:28:00,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:00,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:28:00,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255518304] [2020-09-25 12:28:00,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:28:00,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:00,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:28:00,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:28:00,457 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 12:28:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:04,794 INFO L93 Difference]: Finished difference Result 1957 states and 2552 transitions. [2020-09-25 12:28:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:04,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 12:28:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:04,832 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 12:28:04,833 INFO L226 Difference]: Without dead ends: 1087 [2020-09-25 12:28:04,845 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 12:28:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-25 12:28:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2020-09-25 12:28:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 12:28:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1227 transitions. [2020-09-25 12:28:04,974 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1227 transitions. Word has length 34 [2020-09-25 12:28:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:04,974 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1227 transitions. [2020-09-25 12:28:04,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1227 transitions. [2020-09-25 12:28:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 12:28:04,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:04,981 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:28:04,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:04,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:04,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 12:28:04,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:04,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302598317] [2020-09-25 12:28:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 12:28:07,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:28:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2946 [2020-09-25 12:28:07,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:28:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 12:28:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:08,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:28:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:08,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:28:08,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 12:28:08,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:08,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:28:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:08,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302598317] [2020-09-25 12:28:08,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:08,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:08,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653886120] [2020-09-25 12:28:08,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:08,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:08,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:08,493 INFO L87 Difference]: Start difference. First operand 1039 states and 1227 transitions. Second operand 7 states. [2020-09-25 12:28:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:13,256 INFO L93 Difference]: Finished difference Result 2751 states and 3333 transitions. [2020-09-25 12:28:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:13,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 12:28:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:13,267 INFO L225 Difference]: With dead ends: 2751 [2020-09-25 12:28:13,268 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 12:28:13,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 12:28:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1444. [2020-09-25 12:28:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-25 12:28:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1752 transitions. [2020-09-25 12:28:13,322 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1752 transitions. Word has length 116 [2020-09-25 12:28:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:13,323 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1752 transitions. [2020-09-25 12:28:13,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1752 transitions. [2020-09-25 12:28:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 12:28:13,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:13,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:28:13,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:13,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 12:28:13,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:13,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935991189] [2020-09-25 12:28:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 12:28:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:28:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:28:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 12:28:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:18,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:28:18,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:18,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:28:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 12:28:18,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 12:28:18,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:18,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 12:28:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:18,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935991189] [2020-09-25 12:28:18,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:18,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:18,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681702290] [2020-09-25 12:28:18,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:18,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:18,879 INFO L87 Difference]: Start difference. First operand 1444 states and 1752 transitions. Second operand 7 states. [2020-09-25 12:28:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:23,254 INFO L93 Difference]: Finished difference Result 3573 states and 4382 transitions. [2020-09-25 12:28:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:23,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-09-25 12:28:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:23,269 INFO L225 Difference]: With dead ends: 3573 [2020-09-25 12:28:23,269 INFO L226 Difference]: Without dead ends: 2146 [2020-09-25 12:28:23,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-09-25 12:28:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1902. [2020-09-25 12:28:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-09-25 12:28:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2322 transitions. [2020-09-25 12:28:23,358 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2322 transitions. Word has length 119 [2020-09-25 12:28:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:23,360 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2322 transitions. [2020-09-25 12:28:23,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2322 transitions. [2020-09-25 12:28:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 12:28:23,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:23,373 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:28:23,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:23,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:23,376 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-25 12:28:23,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:23,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083625532] [2020-09-25 12:28:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 12:28:27,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3764 [2020-09-25 12:28:27,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:27,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 12:28:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:27,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:27,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:27,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083625532] [2020-09-25 12:28:27,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:27,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:27,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60969448] [2020-09-25 12:28:27,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:27,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:27,507 INFO L87 Difference]: Start difference. First operand 1902 states and 2322 transitions. Second operand 7 states. [2020-09-25 12:28:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:30,604 INFO L93 Difference]: Finished difference Result 4264 states and 5251 transitions. [2020-09-25 12:28:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:28:30,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 12:28:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:30,628 INFO L225 Difference]: With dead ends: 4264 [2020-09-25 12:28:30,628 INFO L226 Difference]: Without dead ends: 2379 [2020-09-25 12:28:30,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2020-09-25 12:28:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2324. [2020-09-25 12:28:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2324 states. [2020-09-25 12:28:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 2813 transitions. [2020-09-25 12:28:30,781 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 2813 transitions. Word has length 123 [2020-09-25 12:28:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:30,782 INFO L479 AbstractCegarLoop]: Abstraction has 2324 states and 2813 transitions. [2020-09-25 12:28:30,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 2813 transitions. [2020-09-25 12:28:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 12:28:30,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:30,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:30,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:30,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:30,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 12:28:30,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:30,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471279565] [2020-09-25 12:28:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 12:28:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:28:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2131 [2020-09-25 12:28:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 12:28:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:33,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:33,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:33,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 12:28:33,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:28:33,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:33,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:28:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:33,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471279565] [2020-09-25 12:28:33,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:33,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:33,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634295173] [2020-09-25 12:28:33,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:33,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:33,636 INFO L87 Difference]: Start difference. First operand 2324 states and 2813 transitions. Second operand 8 states. [2020-09-25 12:28:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:39,711 INFO L93 Difference]: Finished difference Result 5854 states and 7299 transitions. [2020-09-25 12:28:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:39,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 12:28:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:39,734 INFO L225 Difference]: With dead ends: 5854 [2020-09-25 12:28:39,735 INFO L226 Difference]: Without dead ends: 3941 [2020-09-25 12:28:39,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2020-09-25 12:28:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3746. [2020-09-25 12:28:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-09-25 12:28:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 4530 transitions. [2020-09-25 12:28:39,852 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 4530 transitions. Word has length 175 [2020-09-25 12:28:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:39,853 INFO L479 AbstractCegarLoop]: Abstraction has 3746 states and 4530 transitions. [2020-09-25 12:28:39,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 4530 transitions. [2020-09-25 12:28:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 12:28:39,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:39,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-09-25 12:28:39,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:39,859 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash -485643698, now seen corresponding path program 1 times [2020-09-25 12:28:39,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:39,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065026895] [2020-09-25 12:28:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking...