/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=0.2 --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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:20,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:20,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:20,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:20,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:20,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:20,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:20,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:20,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:20,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:20,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:20,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:20,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:20,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:20,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:20,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:20,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:20,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:20,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:20,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:20,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:20,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:20,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:20,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:20,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:20,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:20,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:20,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:20,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:20,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:20,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:20,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:20,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:20,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:20,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:20,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:20,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:20,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:20,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:20,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:20,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:20,667 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 11:19:20,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:20,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:20,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:20,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:20,722 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:20,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:20,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:20,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:20,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:20,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:20,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:20,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:20,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:20,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:20,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:20,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:20,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:20,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:20,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:20,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:20,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:20,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:20,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:20,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:20,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:20,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:20,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:20,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:20,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:20,729 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:21,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:21,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:21,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:21,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:21,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:21,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 11:19:21,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a3320b3/b84e8b512f604146974f7768342584b8/FLAG7f34a427b [2020-09-25 11:19:22,009 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:22,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 11:19:22,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a3320b3/b84e8b512f604146974f7768342584b8/FLAG7f34a427b [2020-09-25 11:19:22,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29a3320b3/b84e8b512f604146974f7768342584b8 [2020-09-25 11:19:22,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:22,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:22,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:22,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:22,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:22,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:22" (1/1) ... [2020-09-25 11:19:22,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:22, skipping insertion in model container [2020-09-25 11:19:22,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:22" (1/1) ... [2020-09-25 11:19:22,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:22,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:22,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:22,953 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:23,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:23,098 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:23,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23 WrapperNode [2020-09-25 11:19:23,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:23,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:23,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:23,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:23,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (1/1) ... [2020-09-25 11:19:23,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:23,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:23,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:23,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:23,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (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 11:19:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:25,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:25,214 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:25,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:25 BoogieIcfgContainer [2020-09-25 11:19:25,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:25,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:25,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:25,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:25,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:22" (1/3) ... [2020-09-25 11:19:25,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:25, skipping insertion in model container [2020-09-25 11:19:25,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:23" (2/3) ... [2020-09-25 11:19:25,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:25, skipping insertion in model container [2020-09-25 11:19:25,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:25" (3/3) ... [2020-09-25 11:19:25,234 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 11:19:25,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:25,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:25,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:25,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:25,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:25,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:25,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:25,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:25,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:25,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:25,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 11:19:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:25,365 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] [2020-09-25 11:19:25,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:25,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 11:19:25,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:25,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 11:19:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 11:19:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-25 11:19:26,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:19:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:19:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:26,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:26,622 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 11:19:26,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 11:19:26,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:26,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:26,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739532194] [2020-09-25 11:19:26,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:26,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:26,662 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:29,157 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 11:19:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:29,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 11:19:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:29,195 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 11:19:29,196 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 11:19:29,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 11:19:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 11:19:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 11:19:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 11:19:29,325 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 11:19:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:29,326 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 11:19:29,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 11:19:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:19:29,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:29,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:29,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:29,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 11:19:29,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:29,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231919469] [2020-09-25 11:19:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:19:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4391 [2020-09-25 11:19:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:33,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:19:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:33,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:33,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:33,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:33,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:33,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:33,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:33,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:34,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:34,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 11:19:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:34,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:34,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231919469] [2020-09-25 11:19:34,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:34,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:34,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145224631] [2020-09-25 11:19:34,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:34,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:34,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:34,229 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 11:19:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:36,263 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 11:19:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:36,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 11:19:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:36,272 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 11:19:36,272 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 11:19:36,275 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 11:19:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 11:19:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 11:19:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 11:19:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 11:19:36,323 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 137 [2020-09-25 11:19:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:36,323 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 11:19:36,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 11:19:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:19:36,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:36,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:36,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:36,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash -921428875, now seen corresponding path program 1 times [2020-09-25 11:19:36,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:36,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355102531] [2020-09-25 11:19:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:19:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:19:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:19:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:41,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:41,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:41,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:41,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:19:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:41,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:41,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355102531] [2020-09-25 11:19:41,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:41,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:41,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636958729] [2020-09-25 11:19:41,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:41,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:41,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:41,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:41,897 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 11:19:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:45,464 INFO L93 Difference]: Finished difference Result 2360 states and 2882 transitions. [2020-09-25 11:19:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:45,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 11:19:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:45,487 INFO L225 Difference]: With dead ends: 2360 [2020-09-25 11:19:45,488 INFO L226 Difference]: Without dead ends: 1526 [2020-09-25 11:19:45,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2020-09-25 11:19:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1494. [2020-09-25 11:19:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-25 11:19:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1756 transitions. [2020-09-25 11:19:45,603 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1756 transitions. Word has length 147 [2020-09-25 11:19:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:45,605 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1756 transitions. [2020-09-25 11:19:45,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1756 transitions. [2020-09-25 11:19:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 11:19:45,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:45,617 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, 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, 1, 1, 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 11:19:45,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:45,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash -352912224, now seen corresponding path program 1 times [2020-09-25 11:19:45,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:45,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14851870] [2020-09-25 11:19:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 11:19:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:19:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:19:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-09-25 11:19:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:50,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:50,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 11:19:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:51,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 11:19:51,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 65 proven. 84 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:51,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14851870] [2020-09-25 11:19:51,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:51,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:51,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632379625] [2020-09-25 11:19:51,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:51,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:51,514 INFO L87 Difference]: Start difference. First operand 1494 states and 1756 transitions. Second operand 10 states. [2020-09-25 11:19:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:54,712 INFO L93 Difference]: Finished difference Result 2736 states and 3298 transitions. [2020-09-25 11:19:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:54,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 217 [2020-09-25 11:19:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:54,733 INFO L225 Difference]: With dead ends: 2736 [2020-09-25 11:19:54,734 INFO L226 Difference]: Without dead ends: 1890 [2020-09-25 11:19:54,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:19:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-09-25 11:19:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1870. [2020-09-25 11:19:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-09-25 11:19:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2205 transitions. [2020-09-25 11:19:54,813 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2205 transitions. Word has length 217 [2020-09-25 11:19:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:54,814 INFO L479 AbstractCegarLoop]: Abstraction has 1870 states and 2205 transitions. [2020-09-25 11:19:54,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2205 transitions. [2020-09-25 11:19:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 11:19:54,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:54,821 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:54,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:54,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash -477888366, now seen corresponding path program 1 times [2020-09-25 11:19:54,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:54,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697768082] [2020-09-25 11:19:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 11:19:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:19:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:19:59,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:59,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:19:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:00,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:00,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:20:00,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 11:20:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:20:00,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697768082] [2020-09-25 11:20:00,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:00,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:00,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738411994] [2020-09-25 11:20:00,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:00,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:00,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:00,898 INFO L87 Difference]: Start difference. First operand 1870 states and 2205 transitions. Second operand 10 states. [2020-09-25 11:20:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:04,978 INFO L93 Difference]: Finished difference Result 3914 states and 4901 transitions. [2020-09-25 11:20:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:20:04,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-25 11:20:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:04,995 INFO L225 Difference]: With dead ends: 3914 [2020-09-25 11:20:04,995 INFO L226 Difference]: Without dead ends: 2680 [2020-09-25 11:20:05,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-09-25 11:20:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2489. [2020-09-25 11:20:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2489 states. [2020-09-25 11:20:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 2943 transitions. [2020-09-25 11:20:05,071 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 2943 transitions. Word has length 230 [2020-09-25 11:20:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:05,072 INFO L479 AbstractCegarLoop]: Abstraction has 2489 states and 2943 transitions. [2020-09-25 11:20:05,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 2943 transitions. [2020-09-25 11:20:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 11:20:05,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:05,078 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, 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, 1, 1, 1, 1, 1, 1, 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 11:20:05,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:05,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:05,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1691089535, now seen corresponding path program 1 times [2020-09-25 11:20:05,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:05,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221780675] [2020-09-25 11:20:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 11:20:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:20:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:20:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 11:20:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0