/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/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:24,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:24,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:24,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:24,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:24,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:24,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:24,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:24,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:24,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:24,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:24,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:24,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:24,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:24,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:24,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:24,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:24,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:24,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:24,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:24,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:24,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:24,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:24,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:24,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:24,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:24,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:24,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:24,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:24,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:24,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:24,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:24,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:24,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:24,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:24,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:24,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:24,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:24,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:24,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:24,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:24,668 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 05:34:24,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:24,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:24,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:24,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:24,698 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:24,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:24,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:24,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:24,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:24,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:24,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:24,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:24,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:24,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:24,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:24,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:24,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:24,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:24,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:24,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:24,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:24,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:24,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:24,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:24,704 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 05:34:25,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:25,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:25,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:25,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:25,238 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:25,239 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 05:34:25,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da6fa7d08/a583064f08b94315a7b822771fea9552/FLAGc1d36fb25 [2020-09-25 05:34:25,994 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:25,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 05:34:26,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da6fa7d08/a583064f08b94315a7b822771fea9552/FLAGc1d36fb25 [2020-09-25 05:34:26,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da6fa7d08/a583064f08b94315a7b822771fea9552 [2020-09-25 05:34:26,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:26,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:26,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:26,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:26,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:26,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:26" (1/1) ... [2020-09-25 05:34:26,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:26, skipping insertion in model container [2020-09-25 05:34:26,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:26" (1/1) ... [2020-09-25 05:34:26,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:26,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:26,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:26,773 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:27,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:27,074 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:27,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27 WrapperNode [2020-09-25 05:34:27,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:27,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:27,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:27,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:27,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (1/1) ... [2020-09-25 05:34:27,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:27,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:27,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:27,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:27,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (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 05:34:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:28,653 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:28,653 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:28,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:28 BoogieIcfgContainer [2020-09-25 05:34:28,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:28,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:28,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:28,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:28,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:26" (1/3) ... [2020-09-25 05:34:28,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:28, skipping insertion in model container [2020-09-25 05:34:28,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:27" (2/3) ... [2020-09-25 05:34:28,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:28, skipping insertion in model container [2020-09-25 05:34:28,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:28" (3/3) ... [2020-09-25 05:34:28,674 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 05:34:28,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:28,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:28,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:28,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:28,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:28,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:28,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:28,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:28,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:28,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:28,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 05:34:28,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:28,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:28,822 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 05:34:28,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:28,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 05:34:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:34:34,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:34:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:34,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:34:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:34,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:34,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:34,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:34:34,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:34,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:34,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:34,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:34,504 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 05:34:34,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 05:34:34,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:34,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:34:34,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698442287] [2020-09-25 05:34:34,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:34,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:34,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:34,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:34,538 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 05:34:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:37,107 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 05:34:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:37,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 05:34:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:37,158 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 05:34:37,158 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 05:34:37,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 05:34:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 05:34:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 05:34:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 05:34:37,324 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 05:34:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:37,325 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 05:34:37,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 05:34:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:34:37,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:37,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:37,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:37,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 05:34:37,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:37,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518421769] [2020-09-25 05:34:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:37,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:42,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:34:42,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:34:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:34:42,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:42,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:42,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:42,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:34:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:42,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:34:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:42,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:34:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:42,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:42,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518421769] [2020-09-25 05:34:42,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:42,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:42,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229598104] [2020-09-25 05:34:42,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:42,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:42,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:42,606 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-25 05:34:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:44,828 INFO L93 Difference]: Finished difference Result 1483 states and 1856 transitions. [2020-09-25 05:34:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:34:44,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 05:34:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:44,838 INFO L225 Difference]: With dead ends: 1483 [2020-09-25 05:34:44,839 INFO L226 Difference]: Without dead ends: 904 [2020-09-25 05:34:44,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-09-25 05:34:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 806. [2020-09-25 05:34:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 05:34:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 971 transitions. [2020-09-25 05:34:44,886 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 971 transitions. Word has length 163 [2020-09-25 05:34:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:44,886 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 971 transitions. [2020-09-25 05:34:44,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 971 transitions. [2020-09-25 05:34:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:34:44,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:44,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:44,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:44,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-25 05:34:44,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:44,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007751627] [2020-09-25 05:34:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:34:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:34:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:34:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:50,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:34:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:50,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:50,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:50,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:34:50,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:50,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:50,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007751627] [2020-09-25 05:34:50,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:50,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:50,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109511411] [2020-09-25 05:34:50,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:50,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:50,258 INFO L87 Difference]: Start difference. First operand 806 states and 971 transitions. Second operand 5 states. [2020-09-25 05:34:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:52,470 INFO L93 Difference]: Finished difference Result 2093 states and 2633 transitions. [2020-09-25 05:34:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:52,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 05:34:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:52,482 INFO L225 Difference]: With dead ends: 2093 [2020-09-25 05:34:52,482 INFO L226 Difference]: Without dead ends: 1311 [2020-09-25 05:34:52,486 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 05:34:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-25 05:34:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1241. [2020-09-25 05:34:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-25 05:34:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1540 transitions. [2020-09-25 05:34:52,551 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1540 transitions. Word has length 163 [2020-09-25 05:34:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:52,552 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1540 transitions. [2020-09-25 05:34:52,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1540 transitions. [2020-09-25 05:34:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:34:52,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:52,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:52,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:52,562 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2135172696, now seen corresponding path program 1 times [2020-09-25 05:34:52,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:52,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532055948] [2020-09-25 05:34:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 05:34:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:34:57,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:34:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:34:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:57,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:34:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:57,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:34:57,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:57,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 05:34:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:57,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:34:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:57,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532055948] [2020-09-25 05:34:57,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:57,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:34:57,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945242978] [2020-09-25 05:34:57,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:57,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:57,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:57,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:57,980 INFO L87 Difference]: Start difference. First operand 1241 states and 1540 transitions. Second operand 8 states. [2020-09-25 05:35:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:01,213 INFO L93 Difference]: Finished difference Result 3621 states and 4743 transitions. [2020-09-25 05:35:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:35:01,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 05:35:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:01,244 INFO L225 Difference]: With dead ends: 3621 [2020-09-25 05:35:01,245 INFO L226 Difference]: Without dead ends: 2404 [2020-09-25 05:35:01,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:35:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2020-09-25 05:35:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1981. [2020-09-25 05:35:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-09-25 05:35:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2549 transitions. [2020-09-25 05:35:01,348 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2549 transitions. Word has length 179 [2020-09-25 05:35:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:01,349 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2549 transitions. [2020-09-25 05:35:01,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2549 transitions. [2020-09-25 05:35:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 05:35:01,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:01,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:35:01,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:01,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2110153506, now seen corresponding path program 1 times [2020-09-25 05:35:01,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:01,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293599693] [2020-09-25 05:35:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:35:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:35:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:35:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:35:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:35:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:06,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293599693] [2020-09-25 05:35:06,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:06,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:35:06,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48096023] [2020-09-25 05:35:06,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:06,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:06,728 INFO L87 Difference]: Start difference. First operand 1981 states and 2549 transitions. Second operand 8 states. [2020-09-25 05:35:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:09,982 INFO L93 Difference]: Finished difference Result 6681 states and 9196 transitions. [2020-09-25 05:35:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:35:09,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-09-25 05:35:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:10,011 INFO L225 Difference]: With dead ends: 6681 [2020-09-25 05:35:10,011 INFO L226 Difference]: Without dead ends: 4724 [2020-09-25 05:35:10,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:35:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2020-09-25 05:35:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4524. [2020-09-25 05:35:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4524 states. [2020-09-25 05:35:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 5708 transitions. [2020-09-25 05:35:10,167 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 5708 transitions. Word has length 198 [2020-09-25 05:35:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:10,167 INFO L479 AbstractCegarLoop]: Abstraction has 4524 states and 5708 transitions. [2020-09-25 05:35:10,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 5708 transitions. [2020-09-25 05:35:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 05:35:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:10,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:35:10,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:10,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:10,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1957216297, now seen corresponding path program 1 times [2020-09-25 05:35:10,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:10,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833474091] [2020-09-25 05:35:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking...