/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:14,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:14,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:14,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:14,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:14,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:14,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:14,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:14,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:14,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:14,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:14,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:14,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:14,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:14,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:14,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:14,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:14,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:14,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:14,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:14,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:14,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:14,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:14,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:14,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:14,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:14,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:14,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:14,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:14,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:14,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:14,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:14,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:14,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:14,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:14,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:14,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:14,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:14,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:14,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:14,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:14,601 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 10:12:14,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:14,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:14,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:14,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:14,644 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:14,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:14,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:14,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:14,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:14,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:14,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:14,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:14,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:14,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:14,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:14,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:14,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:14,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:14,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:14,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:14,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:14,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:14,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:14,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:14,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:14,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:14,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:14,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:14,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:14,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:15,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:15,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:15,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:15,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:15,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:15,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 10:12:15,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218ae72bc/32219f371dec4d3a8d486c7af3b82dab/FLAGa8cd53def [2020-09-25 10:12:15,976 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:15,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 10:12:15,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218ae72bc/32219f371dec4d3a8d486c7af3b82dab/FLAGa8cd53def [2020-09-25 10:12:16,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218ae72bc/32219f371dec4d3a8d486c7af3b82dab [2020-09-25 10:12:16,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:16,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:16,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:16,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:16,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:16,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:16, skipping insertion in model container [2020-09-25 10:12:16,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:16" (1/1) ... [2020-09-25 10:12:16,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:16,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:16,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:16,944 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:17,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:17,080 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:17,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17 WrapperNode [2020-09-25 10:12:17,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:17,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:17,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:17,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:17,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (1/1) ... [2020-09-25 10:12:17,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:17,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:17,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:17,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:17,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (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 10:12:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:18,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:18,746 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:18,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:18 BoogieIcfgContainer [2020-09-25 10:12:18,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:18,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:18,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:18,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:18,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:16" (1/3) ... [2020-09-25 10:12:18,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3f704a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:18, skipping insertion in model container [2020-09-25 10:12:18,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:17" (2/3) ... [2020-09-25 10:12:18,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3f704a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:18, skipping insertion in model container [2020-09-25 10:12:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:18" (3/3) ... [2020-09-25 10:12:18,765 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 10:12:18,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:18,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:18,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:18,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:18,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:18,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:18,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:18,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:18,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:18,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:18,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:12:18,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:18,895 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] [2020-09-25 10:12:18,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 10:12:18,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:18,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909859039] [2020-09-25 10:12:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:20,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:12:20,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 10:12:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:20,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:12:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:20,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:12:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:20,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:20,232 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 10:12:20,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909859039] [2020-09-25 10:12:20,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:20,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:12:20,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145947076] [2020-09-25 10:12:20,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:20,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:20,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:20,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:20,265 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:12:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:23,131 INFO L93 Difference]: Finished difference Result 1256 states and 1826 transitions. [2020-09-25 10:12:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:23,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 10:12:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:23,170 INFO L225 Difference]: With dead ends: 1256 [2020-09-25 10:12:23,170 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 10:12:23,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 10:12:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 697. [2020-09-25 10:12:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 10:12:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 864 transitions. [2020-09-25 10:12:23,294 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 864 transitions. Word has length 51 [2020-09-25 10:12:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:23,295 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 864 transitions. [2020-09-25 10:12:23,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 864 transitions. [2020-09-25 10:12:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 10:12:23,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:23,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:23,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:23,306 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:23,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1234177337, now seen corresponding path program 1 times [2020-09-25 10:12:23,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:23,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005722639] [2020-09-25 10:12:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:28,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 10:12:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:28,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:12:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:12:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:12:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:28,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:12:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:12:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 10:12:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 10:12:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:28,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005722639] [2020-09-25 10:12:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:28,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:12:28,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044430990] [2020-09-25 10:12:28,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:28,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:28,925 INFO L87 Difference]: Start difference. First operand 697 states and 864 transitions. Second operand 5 states. [2020-09-25 10:12:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:30,485 INFO L93 Difference]: Finished difference Result 1845 states and 2386 transitions. [2020-09-25 10:12:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:12:30,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 10:12:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:30,496 INFO L225 Difference]: With dead ends: 1845 [2020-09-25 10:12:30,497 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 10:12:30,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 10:12:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 10:12:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2020-09-25 10:12:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-25 10:12:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1446 transitions. [2020-09-25 10:12:30,572 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1446 transitions. Word has length 147 [2020-09-25 10:12:30,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:30,577 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1446 transitions. [2020-09-25 10:12:30,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1446 transitions. [2020-09-25 10:12:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 10:12:30,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:30,593 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, 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, 1, 1, 1, 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 10:12:30,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:30,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:30,595 INFO L82 PathProgramCache]: Analyzing trace with hash 731940114, now seen corresponding path program 1 times [2020-09-25 10:12:30,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:30,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227340142] [2020-09-25 10:12:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 10:12:35,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:12:35,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:12:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 10:12:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:12:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:35,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:12:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:35,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:35,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:12:35,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:12:35,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:35,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 10:12:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 10:12:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:12:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 10:12:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:36,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:12:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 121 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:12:36,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227340142] [2020-09-25 10:12:36,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:36,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:12:36,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467483531] [2020-09-25 10:12:36,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:36,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:36,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:36,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:36,417 INFO L87 Difference]: Start difference. First operand 1153 states and 1446 transitions. Second operand 7 states. [2020-09-25 10:12:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:39,037 INFO L93 Difference]: Finished difference Result 2823 states and 3583 transitions. [2020-09-25 10:12:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:12:39,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-25 10:12:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:39,048 INFO L225 Difference]: With dead ends: 2823 [2020-09-25 10:12:39,049 INFO L226 Difference]: Without dead ends: 1685 [2020-09-25 10:12:39,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-25 10:12:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1502. [2020-09-25 10:12:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-09-25 10:12:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1859 transitions. [2020-09-25 10:12:39,103 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1859 transitions. Word has length 245 [2020-09-25 10:12:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:39,104 INFO L479 AbstractCegarLoop]: Abstraction has 1502 states and 1859 transitions. [2020-09-25 10:12:39,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1859 transitions. [2020-09-25 10:12:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 10:12:39,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:39,111 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, 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, 1, 1, 1, 1, 1, 1, 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 10:12:39,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:39,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1115685188, now seen corresponding path program 1 times [2020-09-25 10:12:39,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:39,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058638247] [2020-09-25 10:12:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 10:12:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:12:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:12:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:44,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 10:12:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:12:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:44,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:12:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:44,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 10:12:44,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 10:12:44,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:44,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:44,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 10:12:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 10:12:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:44,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:44,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:12:44,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 10:12:44,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:44,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:44,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:12:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:12:44,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058638247] [2020-09-25 10:12:44,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:44,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:44,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344587454] [2020-09-25 10:12:44,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:44,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:44,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:44,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:44,903 INFO L87 Difference]: Start difference. First operand 1502 states and 1859 transitions. Second operand 6 states. [2020-09-25 10:12:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:47,349 INFO L93 Difference]: Finished difference Result 3825 states and 4811 transitions. [2020-09-25 10:12:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:47,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-09-25 10:12:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:47,368 INFO L225 Difference]: With dead ends: 3825 [2020-09-25 10:12:47,368 INFO L226 Difference]: Without dead ends: 2338 [2020-09-25 10:12:47,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2020-09-25 10:12:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2291. [2020-09-25 10:12:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-09-25 10:12:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2868 transitions. [2020-09-25 10:12:47,459 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2868 transitions. Word has length 254 [2020-09-25 10:12:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:47,460 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 2868 transitions. [2020-09-25 10:12:47,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2868 transitions. [2020-09-25 10:12:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 10:12:47,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:47,469 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:47,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:47,469 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1950613258, now seen corresponding path program 1 times [2020-09-25 10:12:47,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:47,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135738375] [2020-09-25 10:12:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:52,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 10:12:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:12:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 10:12:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:52,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:12:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:52,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 10:12:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:52,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:52,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:12:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 10:12:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:12:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:12:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 10:12:53,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135738375] [2020-09-25 10:12:53,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:53,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:53,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805437548] [2020-09-25 10:12:53,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:53,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:53,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:53,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:53,377 INFO L87 Difference]: Start difference. First operand 2291 states and 2868 transitions. Second operand 9 states. [2020-09-25 10:12:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:57,677 INFO L93 Difference]: Finished difference Result 6177 states and 8534 transitions. [2020-09-25 10:12:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:12:57,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 275 [2020-09-25 10:12:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:57,709 INFO L225 Difference]: With dead ends: 6177 [2020-09-25 10:12:57,709 INFO L226 Difference]: Without dead ends: 4051 [2020-09-25 10:12:57,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:12:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2020-09-25 10:12:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3738. [2020-09-25 10:12:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3738 states. [2020-09-25 10:12:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 4908 transitions. [2020-09-25 10:12:57,878 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 4908 transitions. Word has length 275 [2020-09-25 10:12:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:57,878 INFO L479 AbstractCegarLoop]: Abstraction has 3738 states and 4908 transitions. [2020-09-25 10:12:57,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 4908 transitions. [2020-09-25 10:12:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 10:12:57,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:57,891 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:57,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:57,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:57,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1654703250, now seen corresponding path program 1 times [2020-09-25 10:12:57,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:57,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565450029] [2020-09-25 10:12:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking...