/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:25,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:25,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:25,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:25,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:25,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:25,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:25,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:25,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:25,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:25,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:25,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:25,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:25,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:25,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:25,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:25,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:25,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:25,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:25,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:25,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:25,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:25,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:25,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:25,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:25,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:25,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:25,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:25,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:25,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:25,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:25,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:25,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:25,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:25,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:25,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:25,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:25,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:25,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:25,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:25,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:25,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:55:25,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:25,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:25,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:25,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:25,217 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:25,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:25,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:25,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:25,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:25,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:25,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:25,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:25,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:25,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:25,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:25,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:25,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:25,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:25,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:25,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:25,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:25,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:25,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:25,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:25,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:25,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:25,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:25,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:25,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:25,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:25,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:25,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:25,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:25,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:25,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:25,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 07:55:25,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f97f39626/a643180902d44259aafec3ab5b15093f/FLAG34568a765 [2020-09-25 07:55:26,548 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:26,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 07:55:26,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f97f39626/a643180902d44259aafec3ab5b15093f/FLAG34568a765 [2020-09-25 07:55:26,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f97f39626/a643180902d44259aafec3ab5b15093f [2020-09-25 07:55:26,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:26,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:26,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:26,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:26,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:26,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:26" (1/1) ... [2020-09-25 07:55:26,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:26, skipping insertion in model container [2020-09-25 07:55:26,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:26" (1/1) ... [2020-09-25 07:55:26,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:26,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:27,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:27,347 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:27,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:27,576 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:27,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27 WrapperNode [2020-09-25 07:55:27,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:27,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:27,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:27,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:27,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:27,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:27,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:27,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:27,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:27,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:27,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:27,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:27,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:27,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:29,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:29,164 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:29,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:29 BoogieIcfgContainer [2020-09-25 07:55:29,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:29,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:29,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:29,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:29,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:26" (1/3) ... [2020-09-25 07:55:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:29, skipping insertion in model container [2020-09-25 07:55:29,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (2/3) ... [2020-09-25 07:55:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:29, skipping insertion in model container [2020-09-25 07:55:29,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:29" (3/3) ... [2020-09-25 07:55:29,185 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 07:55:29,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:29,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:29,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:29,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:29,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:29,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:29,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:29,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:29,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:29,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:29,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:55:29,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:29,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:29,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 07:55:29,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:29,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 07:55:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 07:55:34,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:55:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 07:55:34,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:34,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:34,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:55:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 07:55:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:55:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:35,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 07:55:35,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:35,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:35,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083908301] [2020-09-25 07:55:35,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:35,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:35,063 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:37,388 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:55:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:37,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 07:55:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:37,426 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:55:37,427 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:55:37,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:55:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:55:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:55:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:55:37,574 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-25 07:55:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:37,575 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:55:37,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:55:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 07:55:37,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:37,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:37,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:37,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:37,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-25 07:55:37,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:37,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931053288] [2020-09-25 07:55:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 07:55:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:55:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:55:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:42,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 07:55:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:42,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:42,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:42,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:55:42,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:42,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:42,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931053288] [2020-09-25 07:55:42,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:42,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:42,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083702307] [2020-09-25 07:55:42,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:42,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:42,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:42,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:42,965 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:55:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:44,992 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 07:55:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:44,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 07:55:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:45,007 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 07:55:45,008 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 07:55:45,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 07:55:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 07:55:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 07:55:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 07:55:45,083 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 147 [2020-09-25 07:55:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:45,085 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 07:55:45,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 07:55:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:55:45,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:45,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:45,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:45,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 07:55:45,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:45,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752170074] [2020-09-25 07:55:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:55:50,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:55:50,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:50,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 07:55:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:55:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:50,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:50,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:50,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:50,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:50,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:55:50,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:55:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:55:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:50,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752170074] [2020-09-25 07:55:50,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:50,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:50,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730051049] [2020-09-25 07:55:50,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:50,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:50,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:50,434 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 6 states. [2020-09-25 07:55:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:53,029 INFO L93 Difference]: Finished difference Result 2820 states and 3635 transitions. [2020-09-25 07:55:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:55:53,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 07:55:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:53,041 INFO L225 Difference]: With dead ends: 2820 [2020-09-25 07:55:53,042 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 07:55:53,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 07:55:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1115. [2020-09-25 07:55:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 07:55:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1346 transitions. [2020-09-25 07:55:53,094 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1346 transitions. Word has length 163 [2020-09-25 07:55:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:53,095 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1346 transitions. [2020-09-25 07:55:53,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1346 transitions. [2020-09-25 07:55:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:55:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:53,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:53,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:53,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:53,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 07:55:53,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:53,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200114846] [2020-09-25 07:55:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 07:55:58,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:55:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:58,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:58,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:58,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:55:58,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:58,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:55:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:58,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200114846] [2020-09-25 07:55:58,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:58,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:55:58,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890456438] [2020-09-25 07:55:58,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:55:58,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:58,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:55:58,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:55:58,866 INFO L87 Difference]: Start difference. First operand 1115 states and 1346 transitions. Second operand 9 states. [2020-09-25 07:56:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:03,348 INFO L93 Difference]: Finished difference Result 3322 states and 4266 transitions. [2020-09-25 07:56:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:03,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-25 07:56:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:03,367 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 07:56:03,367 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 07:56:03,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 07:56:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2084. [2020-09-25 07:56:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-25 07:56:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2489 transitions. [2020-09-25 07:56:03,434 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2489 transitions. Word has length 167 [2020-09-25 07:56:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:03,435 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2489 transitions. [2020-09-25 07:56:03,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2489 transitions. [2020-09-25 07:56:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:56:03,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:03,443 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:03,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:03,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1831307549, now seen corresponding path program 1 times [2020-09-25 07:56:03,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:03,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496882394] [2020-09-25 07:56:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 07:56:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:56:08,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:56:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:56:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:56:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:08,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:08,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:08,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:56:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:56:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:56:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:08,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:56:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:08,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:56:08,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:56:08,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:08,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:56:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:56:08,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496882394] [2020-09-25 07:56:08,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:08,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:08,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873781295] [2020-09-25 07:56:08,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:08,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:08,751 INFO L87 Difference]: Start difference. First operand 2084 states and 2489 transitions. Second operand 5 states. [2020-09-25 07:56:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:10,634 INFO L93 Difference]: Finished difference Result 5277 states and 6498 transitions. [2020-09-25 07:56:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:10,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 07:56:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:10,653 INFO L225 Difference]: With dead ends: 5277 [2020-09-25 07:56:10,653 INFO L226 Difference]: Without dead ends: 3215 [2020-09-25 07:56:10,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2020-09-25 07:56:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3146. [2020-09-25 07:56:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-09-25 07:56:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 3729 transitions. [2020-09-25 07:56:10,750 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 3729 transitions. Word has length 191 [2020-09-25 07:56:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:10,751 INFO L479 AbstractCegarLoop]: Abstraction has 3146 states and 3729 transitions. [2020-09-25 07:56:10,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 3729 transitions. [2020-09-25 07:56:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 07:56:10,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:10,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:10,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:10,762 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash -276703914, now seen corresponding path program 1 times [2020-09-25 07:56:10,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:10,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014347806] [2020-09-25 07:56:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking...