/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:23,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:23,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:23,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:23,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:23,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:23,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:23,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:23,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:23,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:23,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:23,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:23,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:23,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:23,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:23,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:23,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:23,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:23,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:23,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:23,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:23,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:23,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:23,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:23,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:23,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:23,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:23,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:23,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:23,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:23,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:23,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:23,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:23,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:23,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:23,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:23,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:23,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:23,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:23,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:23,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:23,200 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 05:38:23,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:23,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:23,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:23,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:23,250 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:23,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:23,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:23,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:23,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:23,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:23,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:23,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:23,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:23,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:23,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:23,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:23,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:23,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:23,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:23,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:23,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:23,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:23,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:23,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:23,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:23,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:23,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:23,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:23,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:23,257 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:23,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:23,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:23,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:23,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:23,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:23,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 05:38:23,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5aef3b/1e197930de314606b0bfc8380cbc0f15/FLAG4a0be0f87 [2020-09-25 05:38:24,486 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:24,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 05:38:24,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5aef3b/1e197930de314606b0bfc8380cbc0f15/FLAG4a0be0f87 [2020-09-25 05:38:24,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5aef3b/1e197930de314606b0bfc8380cbc0f15 [2020-09-25 05:38:24,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:24,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:24,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:24,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:24,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:24,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:24" (1/1) ... [2020-09-25 05:38:24,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:24, skipping insertion in model container [2020-09-25 05:38:24,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:24" (1/1) ... [2020-09-25 05:38:24,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:24,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:25,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:25,452 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:25,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:25,662 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25 WrapperNode [2020-09-25 05:38:25,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:25,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:25,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:25,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:25,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (1/1) ... [2020-09-25 05:38:25,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:25,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:25,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:25,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:25,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (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 05:38:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:27,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:27,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:27,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:27 BoogieIcfgContainer [2020-09-25 05:38:27,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:27,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:27,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:27,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:27,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:24" (1/3) ... [2020-09-25 05:38:27,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:27, skipping insertion in model container [2020-09-25 05:38:27,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:25" (2/3) ... [2020-09-25 05:38:27,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:27, skipping insertion in model container [2020-09-25 05:38:27,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:27" (3/3) ... [2020-09-25 05:38:27,342 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 05:38:27,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:27,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:27,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:27,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:27,441 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:27,441 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:27,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:27,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:27,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:27,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:27,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 05:38:27,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:27,488 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] [2020-09-25 05:38:27,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 05:38:27,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:27,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302305946] [2020-09-25 05:38:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 05:38:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 05:38:28,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:38:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:38:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:28,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:38:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,603 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 05:38:28,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302305946] [2020-09-25 05:38:28,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:28,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:28,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084324798] [2020-09-25 05:38:28,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:28,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:28,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:28,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:28,636 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:30,839 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:38:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:30,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 05:38:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:30,868 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:38:30,868 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:38:30,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:38:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:38:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:38:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:38:30,985 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 05:38:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:30,986 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:38:30,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:38:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 05:38:30,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:30,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:30,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:30,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 05:38:30,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:30,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191838989] [2020-09-25 05:38:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 05:38:36,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:38:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:36,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:36,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:36,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:38:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:38:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:36,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191838989] [2020-09-25 05:38:36,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:36,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:36,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978842133] [2020-09-25 05:38:36,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:36,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:36,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:36,354 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:38:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:38,250 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 05:38:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:38,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 05:38:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:38,257 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 05:38:38,257 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 05:38:38,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 05:38:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 05:38:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 05:38:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 05:38:38,297 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 05:38:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:38,298 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 05:38:38,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 05:38:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:38:38,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:38,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:38,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:38,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:38,304 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 05:38:38,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:38,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324769370] [2020-09-25 05:38:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 05:38:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:38:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:38:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:43,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:38:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:38:43,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:43,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:43,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:43,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 05:38:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:43,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:43,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:43,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324769370] [2020-09-25 05:38:43,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:43,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:43,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048819024] [2020-09-25 05:38:43,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:43,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:43,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:43,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:43,787 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 05:38:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:46,667 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 05:38:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:46,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 05:38:46,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:46,679 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 05:38:46,679 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 05:38:46,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 05:38:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 05:38:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 05:38:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 05:38:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 05:38:46,744 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 138 [2020-09-25 05:38:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:46,746 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 05:38:46,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 05:38:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:38:46,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:46,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:46,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:46,761 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 05:38:46,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:46,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736730264] [2020-09-25 05:38:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:38:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2746 [2020-09-25 05:38:49,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:49,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:38:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:49,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:49,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:49,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:49,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:49,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:38:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 05:38:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:49,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:49,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736730264] [2020-09-25 05:38:49,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:49,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:49,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577272536] [2020-09-25 05:38:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:49,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:49,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:49,906 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 6 states. [2020-09-25 05:38:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:52,744 INFO L93 Difference]: Finished difference Result 3438 states and 4660 transitions. [2020-09-25 05:38:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:52,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-09-25 05:38:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:52,767 INFO L225 Difference]: With dead ends: 3438 [2020-09-25 05:38:52,768 INFO L226 Difference]: Without dead ends: 2284 [2020-09-25 05:38:52,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2020-09-25 05:38:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2234. [2020-09-25 05:38:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-25 05:38:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2951 transitions. [2020-09-25 05:38:52,853 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2951 transitions. Word has length 140 [2020-09-25 05:38:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:52,854 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2951 transitions. [2020-09-25 05:38:52,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2951 transitions. [2020-09-25 05:38:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:38:52,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:52,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:52,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:52,858 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:52,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1274196626, now seen corresponding path program 1 times [2020-09-25 05:38:52,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:52,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520328709] [2020-09-25 05:38:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:57,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:38:57,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4332 [2020-09-25 05:38:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:38:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:57,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:38:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:57,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:38:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:57,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520328709] [2020-09-25 05:38:57,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:57,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:57,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645900742] [2020-09-25 05:38:57,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:57,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:57,573 INFO L87 Difference]: Start difference. First operand 2234 states and 2951 transitions. Second operand 6 states. [2020-09-25 05:39:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:00,143 INFO L93 Difference]: Finished difference Result 5992 states and 8354 transitions. [2020-09-25 05:39:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:00,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 05:39:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:00,165 INFO L225 Difference]: With dead ends: 5992 [2020-09-25 05:39:00,166 INFO L226 Difference]: Without dead ends: 3923 [2020-09-25 05:39:00,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2020-09-25 05:39:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3899. [2020-09-25 05:39:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3899 states. [2020-09-25 05:39:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 5250 transitions. [2020-09-25 05:39:00,313 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 5250 transitions. Word has length 157 [2020-09-25 05:39:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:00,314 INFO L479 AbstractCegarLoop]: Abstraction has 3899 states and 5250 transitions. [2020-09-25 05:39:00,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 5250 transitions. [2020-09-25 05:39:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 05:39:00,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:00,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:00,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:00,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1838139866, now seen corresponding path program 1 times [2020-09-25 05:39:00,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:00,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456238819] [2020-09-25 05:39:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:05,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 05:39:05,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 05:39:05,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:05,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:39:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:05,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:05,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 05:39:05,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:05,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 05:39:06,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 05:39:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:06,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:39:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:06,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456238819] [2020-09-25 05:39:06,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:06,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:06,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346540745] [2020-09-25 05:39:06,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:06,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:06,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:06,282 INFO L87 Difference]: Start difference. First operand 3899 states and 5250 transitions. Second operand 7 states. [2020-09-25 05:39:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:08,867 INFO L93 Difference]: Finished difference Result 8547 states and 11899 transitions. [2020-09-25 05:39:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:39:08,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-25 05:39:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:08,893 INFO L225 Difference]: With dead ends: 8547 [2020-09-25 05:39:08,893 INFO L226 Difference]: Without dead ends: 3713 [2020-09-25 05:39:08,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2020-09-25 05:39:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3581. [2020-09-25 05:39:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3581 states. [2020-09-25 05:39:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4634 transitions. [2020-09-25 05:39:09,039 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4634 transitions. Word has length 275 [2020-09-25 05:39:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:09,039 INFO L479 AbstractCegarLoop]: Abstraction has 3581 states and 4634 transitions. [2020-09-25 05:39:09,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4634 transitions. [2020-09-25 05:39:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-25 05:39:09,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:09,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 05:39:09,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:09,056 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1470807990, now seen corresponding path program 1 times [2020-09-25 05:39:09,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:09,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465398608] [2020-09-25 05:39:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking...