/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/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:42,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:42,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:42,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:42,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:42,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:42,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:42,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:42,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:42,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:42,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:42,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:42,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:42,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:42,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:42,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:42,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:42,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:42,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:42,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:42,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:42,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:42,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:42,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:42,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:42,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:42,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:42,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:42,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:42,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:42,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:42,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:42,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:42,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:42,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:42,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:42,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:42,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:42,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:42,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:42,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:42,652 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 10:09:42,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:42,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:42,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:42,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:42,715 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:42,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:42,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:42,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:42,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:42,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:42,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:42,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:42,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:42,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:42,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:42,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:42,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:42,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:42,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:42,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:42,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:42,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:42,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:42,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:42,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:42,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:42,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:42,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:42,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:42,721 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 10:09:43,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:43,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:43,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:43,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:43,243 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:43,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 10:09:43,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c727169/d886598392644b84a77c6110a6fd7413/FLAGd7f725bf2 [2020-09-25 10:09:44,007 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:44,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 10:09:44,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c727169/d886598392644b84a77c6110a6fd7413/FLAGd7f725bf2 [2020-09-25 10:09:44,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c727169/d886598392644b84a77c6110a6fd7413 [2020-09-25 10:09:44,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:44,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:44,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:44,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:44,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:44,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:44" (1/1) ... [2020-09-25 10:09:44,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:44, skipping insertion in model container [2020-09-25 10:09:44,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:44" (1/1) ... [2020-09-25 10:09:44,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:44,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:44,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:44,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:45,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:45,099 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:45,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45 WrapperNode [2020-09-25 10:09:45,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:45,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:45,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:45,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:45,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (1/1) ... [2020-09-25 10:09:45,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:45,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:45,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:45,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:45,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (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 10:09:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:46,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:46,719 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:46,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:46 BoogieIcfgContainer [2020-09-25 10:09:46,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:46,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:46,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:46,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:46,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:44" (1/3) ... [2020-09-25 10:09:46,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e506e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:46, skipping insertion in model container [2020-09-25 10:09:46,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:45" (2/3) ... [2020-09-25 10:09:46,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e506e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:46, skipping insertion in model container [2020-09-25 10:09:46,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:46" (3/3) ... [2020-09-25 10:09:46,749 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 10:09:46,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:46,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:46,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:46,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:46,844 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:46,845 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:46,845 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:46,845 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:46,845 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:46,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:46,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 10:09:46,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:46,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:46,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:46,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:46,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 10:09:46,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:46,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083735488] [2020-09-25 10:09:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:52,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:52,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 10:09:52,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:09:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:09:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:52,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 10:09:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:09:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:52,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:09:52,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:52,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:52,543 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 10:09:52,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083735488] [2020-09-25 10:09:52,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:52,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:52,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979983599] [2020-09-25 10:09:52,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:52,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:52,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:52,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:52,586 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:54,951 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:09:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:54,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 10:09:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:54,991 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:09:54,992 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:09:55,003 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 10:09:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:09:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:09:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:09:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 10:09:55,110 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 124 [2020-09-25 10:09:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:55,111 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 10:09:55,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 10:09:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 10:09:55,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:55,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:55,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:55,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 180693394, now seen corresponding path program 1 times [2020-09-25 10:09:55,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:55,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173354177] [2020-09-25 10:09:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:00,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 10:10:00,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:00,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:00,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:10:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:00,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:10:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:10:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:10:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:00,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:00,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:10:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:00,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173354177] [2020-09-25 10:10:00,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:00,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:00,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324796906] [2020-09-25 10:10:00,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:00,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:00,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:00,654 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 6 states. [2020-09-25 10:10:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:02,819 INFO L93 Difference]: Finished difference Result 1549 states and 2068 transitions. [2020-09-25 10:10:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:02,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-09-25 10:10:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:02,828 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 10:10:02,829 INFO L226 Difference]: Without dead ends: 958 [2020-09-25 10:10:02,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-09-25 10:10:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 924. [2020-09-25 10:10:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 10:10:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1198 transitions. [2020-09-25 10:10:02,893 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1198 transitions. Word has length 150 [2020-09-25 10:10:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:02,894 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1198 transitions. [2020-09-25 10:10:02,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1198 transitions. [2020-09-25 10:10:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 10:10:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:02,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:02,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:02,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1775646540, now seen corresponding path program 1 times [2020-09-25 10:10:02,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:02,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013363925] [2020-09-25 10:10:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 10:10:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3804 [2020-09-25 10:10:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:06,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:10:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:06,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:06,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:06,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 10:10:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:07,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:10:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:07,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013363925] [2020-09-25 10:10:07,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:07,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:07,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832842372] [2020-09-25 10:10:07,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:07,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:07,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:07,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:07,451 INFO L87 Difference]: Start difference. First operand 924 states and 1198 transitions. Second operand 11 states. [2020-09-25 10:10:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:10,473 INFO L93 Difference]: Finished difference Result 2087 states and 2781 transitions. [2020-09-25 10:10:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:10,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2020-09-25 10:10:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:10,478 INFO L225 Difference]: With dead ends: 2087 [2020-09-25 10:10:10,479 INFO L226 Difference]: Without dead ends: 735 [2020-09-25 10:10:10,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:10:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-09-25 10:10:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 721. [2020-09-25 10:10:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-09-25 10:10:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 842 transitions. [2020-09-25 10:10:10,511 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 842 transitions. Word has length 158 [2020-09-25 10:10:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:10,511 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 842 transitions. [2020-09-25 10:10:10,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:10:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 842 transitions. [2020-09-25 10:10:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 10:10:10,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:10,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:10,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:10,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1487586036, now seen corresponding path program 1 times [2020-09-25 10:10:10,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:10,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171976091] [2020-09-25 10:10:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:10:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-25 10:10:11,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:10:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:10:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:10:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:10:11,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:11,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 10:10:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:11,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171976091] [2020-09-25 10:10:11,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:11,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:10:11,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687438774] [2020-09-25 10:10:11,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:10:11,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:10:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:11,981 INFO L87 Difference]: Start difference. First operand 721 states and 842 transitions. Second operand 7 states. [2020-09-25 10:10:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:14,520 INFO L93 Difference]: Finished difference Result 2063 states and 2482 transitions. [2020-09-25 10:10:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:10:14,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 10:10:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:14,531 INFO L225 Difference]: With dead ends: 2063 [2020-09-25 10:10:14,531 INFO L226 Difference]: Without dead ends: 1364 [2020-09-25 10:10:14,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-09-25 10:10:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1142. [2020-09-25 10:10:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-09-25 10:10:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1368 transitions. [2020-09-25 10:10:14,586 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1368 transitions. Word has length 193 [2020-09-25 10:10:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:14,587 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1368 transitions. [2020-09-25 10:10:14,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:10:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1368 transitions. [2020-09-25 10:10:14,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 10:10:14,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:14,594 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:14,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:14,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:14,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1777903215, now seen corresponding path program 1 times [2020-09-25 10:10:14,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:14,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318768492] [2020-09-25 10:10:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 10:10:19,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 10:10:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 10:10:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:10:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:19,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:10:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:19,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:19,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:19,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:10:19,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:10:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:19,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:10:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:10:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:10:20,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318768492] [2020-09-25 10:10:20,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:20,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:20,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396172829] [2020-09-25 10:10:20,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:20,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:20,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:20,070 INFO L87 Difference]: Start difference. First operand 1142 states and 1368 transitions. Second operand 6 states. [2020-09-25 10:10:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:21,592 INFO L93 Difference]: Finished difference Result 2952 states and 3677 transitions. [2020-09-25 10:10:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:21,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-09-25 10:10:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:21,605 INFO L225 Difference]: With dead ends: 2952 [2020-09-25 10:10:21,606 INFO L226 Difference]: Without dead ends: 1832 [2020-09-25 10:10:21,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-09-25 10:10:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1780. [2020-09-25 10:10:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-09-25 10:10:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2071 transitions. [2020-09-25 10:10:21,679 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2071 transitions. Word has length 202 [2020-09-25 10:10:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:21,680 INFO L479 AbstractCegarLoop]: Abstraction has 1780 states and 2071 transitions. [2020-09-25 10:10:21,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2071 transitions. [2020-09-25 10:10:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 10:10:21,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:21,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:21,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:10:21,708 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash -910550581, now seen corresponding path program 1 times [2020-09-25 10:10:21,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:21,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442707126] [2020-09-25 10:10:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-09-25 10:10:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:10:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:26,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:26,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:26,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:10:26,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:26,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:10:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:26,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:27,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:10:27,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 10:10:27,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:27,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:10:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:10:28,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442707126] [2020-09-25 10:10:28,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:28,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:28,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257499418] [2020-09-25 10:10:28,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:28,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:28,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:28,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:28,107 INFO L87 Difference]: Start difference. First operand 1780 states and 2071 transitions. Second operand 11 states.