/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:27,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:27,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:27,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:27,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:27,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:27,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:27,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:27,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:27,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:27,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:27,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:27,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:27,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:27,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:27,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:27,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:27,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:27,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:27,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:27,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:27,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:27,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:27,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:27,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:27,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:27,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:27,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:27,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:27,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:27,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:27,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:27,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:27,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:27,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:27,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:27,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:27,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:27,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:27,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:27,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:27,674 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 13:33:27,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:27,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:27,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:27,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:27,702 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:27,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:27,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:27,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:27,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:27,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:27,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:27,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:27,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:27,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:27,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:27,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:27,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:27,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:27,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:27,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:27,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:27,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:27,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:27,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:27,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:27,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:27,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:27,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:27,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:27,708 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:28,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:28,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:28,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:28,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:28,187 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:28,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 13:33:28,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0eaf1fe/f19178a922ab4f329e6e55d795e309db/FLAGd336dd077 [2020-09-25 13:33:28,950 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:28,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 13:33:28,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0eaf1fe/f19178a922ab4f329e6e55d795e309db/FLAGd336dd077 [2020-09-25 13:33:29,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0eaf1fe/f19178a922ab4f329e6e55d795e309db [2020-09-25 13:33:29,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:29,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:29,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:29,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:29,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:29,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:29,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4d5a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29, skipping insertion in model container [2020-09-25 13:33:29,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:29,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:29,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:29,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:29,732 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:29,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:29,969 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:29,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29 WrapperNode [2020-09-25 13:33:29,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:29,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:29,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:29,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:29,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:29,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (1/1) ... [2020-09-25 13:33:30,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:30,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:30,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:30,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:30,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (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 13:33:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:31,778 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:31,779 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:31,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:31 BoogieIcfgContainer [2020-09-25 13:33:31,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:31,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:31,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:31,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:31,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:29" (1/3) ... [2020-09-25 13:33:31,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524565b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:31, skipping insertion in model container [2020-09-25 13:33:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:29" (2/3) ... [2020-09-25 13:33:31,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524565b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:31, skipping insertion in model container [2020-09-25 13:33:31,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:31" (3/3) ... [2020-09-25 13:33:31,798 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 13:33:31,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:31,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:31,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:31,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:31,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:31,881 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:31,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:31,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:31,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:31,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:31,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 13:33:31,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:31,927 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] [2020-09-25 13:33:31,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:31,934 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 13:33:31,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:31,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704847110] [2020-09-25 13:33:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:33:33,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-09-25 13:33:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:33,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:33:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:33,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:33,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:33:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:33,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:33,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:33,245 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 13:33:33,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704847110] [2020-09-25 13:33:33,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:33,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:33,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842704227] [2020-09-25 13:33:33,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:33,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:33,288 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:33:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:35,210 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:33:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:35,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 13:33:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:35,235 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:33:35,236 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:33:35,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:33:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:33:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:33:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:33:35,391 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 13:33:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:35,392 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:33:35,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:33:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 13:33:35,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:35,401 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, 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] [2020-09-25 13:33:35,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:35,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:35,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:35,402 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 13:33:35,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:35,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665465916] [2020-09-25 13:33:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 13:33:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:40,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:33:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 13:33:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:33:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 13:33:40,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:33:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:33:40,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665465916] [2020-09-25 13:33:40,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:40,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:40,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784790760] [2020-09-25 13:33:40,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:40,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:40,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:40,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:40,890 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:33:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:42,762 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 13:33:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:42,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 13:33:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:42,769 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 13:33:42,769 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 13:33:42,771 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 13:33:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 13:33:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 13:33:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:33:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 13:33:42,796 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 157 [2020-09-25 13:33:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:42,797 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 13:33:42,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 13:33:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:33:42,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:42,801 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, 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] [2020-09-25 13:33:42,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:42,802 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1315129595, now seen corresponding path program 1 times [2020-09-25 13:33:42,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:42,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4070991] [2020-09-25 13:33:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 13:33:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:33:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:33:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:33:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:33:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:33:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:33:48,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:48,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 13:33:48,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:33:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:48,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4070991] [2020-09-25 13:33:48,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:48,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:33:48,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314415271] [2020-09-25 13:33:48,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:33:48,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:33:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:48,458 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 13:33:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:50,956 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 13:33:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:33:50,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-09-25 13:33:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:50,963 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 13:33:50,963 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 13:33:50,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:33:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 13:33:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 13:33:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 13:33:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 13:33:51,002 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 167 [2020-09-25 13:33:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:51,003 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 13:33:51,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:33:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 13:33:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 13:33:51,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:51,006 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, 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] [2020-09-25 13:33:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:51,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:51,007 INFO L82 PathProgramCache]: Analyzing trace with hash -8332915, now seen corresponding path program 1 times [2020-09-25 13:33:51,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:51,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282421985] [2020-09-25 13:33:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:53,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 13:33:53,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2217 [2020-09-25 13:33:53,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:53,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:53,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:33:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:33:53,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:53,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:33:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:53,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282421985] [2020-09-25 13:33:53,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:53,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:53,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728166891] [2020-09-25 13:33:53,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:53,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:53,823 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 8 states. [2020-09-25 13:33:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:56,977 INFO L93 Difference]: Finished difference Result 2376 states and 2949 transitions. [2020-09-25 13:33:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:56,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 13:33:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:56,990 INFO L225 Difference]: With dead ends: 2376 [2020-09-25 13:33:56,990 INFO L226 Difference]: Without dead ends: 1546 [2020-09-25 13:33:56,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-09-25 13:33:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1505. [2020-09-25 13:33:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-25 13:33:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1792 transitions. [2020-09-25 13:33:57,081 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1792 transitions. Word has length 169 [2020-09-25 13:33:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:57,083 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1792 transitions. [2020-09-25 13:33:57,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1792 transitions. [2020-09-25 13:33:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 13:33:57,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:57,089 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:57,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:57,090 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:57,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:57,090 INFO L82 PathProgramCache]: Analyzing trace with hash 570322263, now seen corresponding path program 1 times [2020-09-25 13:33:57,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:57,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717602236] [2020-09-25 13:33:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 13:34:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:34:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:34:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:02,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:02,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:34:02,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 13:34:02,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:02,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:34:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:02,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717602236] [2020-09-25 13:34:02,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:02,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:34:02,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188935194] [2020-09-25 13:34:02,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:02,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:02,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:02,659 INFO L87 Difference]: Start difference. First operand 1505 states and 1792 transitions. Second operand 8 states. [2020-09-25 13:34:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:05,646 INFO L93 Difference]: Finished difference Result 3039 states and 3915 transitions. [2020-09-25 13:34:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:05,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 13:34:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:05,665 INFO L225 Difference]: With dead ends: 3039 [2020-09-25 13:34:05,665 INFO L226 Difference]: Without dead ends: 1699 [2020-09-25 13:34:05,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:34:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-09-25 13:34:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1637. [2020-09-25 13:34:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 13:34:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2055 transitions. [2020-09-25 13:34:05,736 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2055 transitions. Word has length 186 [2020-09-25 13:34:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:05,737 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2055 transitions. [2020-09-25 13:34:05,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2055 transitions. [2020-09-25 13:34:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 13:34:05,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:05,742 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:05,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:05,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1558755997, now seen corresponding path program 1 times [2020-09-25 13:34:05,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:05,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697309049] [2020-09-25 13:34:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:10,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 13:34:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:34:10,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:10,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 13:34:10,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:11,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 13:34:11,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:34:11,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 13:34:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:11,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:34:11,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 141 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:11,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697309049] [2020-09-25 13:34:11,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:11,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:11,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871946063] [2020-09-25 13:34:11,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:11,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:11,458 INFO L87 Difference]: Start difference. First operand 1637 states and 2055 transitions. Second operand 9 states. [2020-09-25 13:34:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:15,756 INFO L93 Difference]: Finished difference Result 5341 states and 7058 transitions. [2020-09-25 13:34:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:34:15,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 13:34:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:15,781 INFO L225 Difference]: With dead ends: 5341 [2020-09-25 13:34:15,782 INFO L226 Difference]: Without dead ends: 3869 [2020-09-25 13:34:15,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:34:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2020-09-25 13:34:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3360. [2020-09-25 13:34:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3360 states. [2020-09-25 13:34:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4267 transitions. [2020-09-25 13:34:15,889 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4267 transitions. Word has length 248 [2020-09-25 13:34:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:15,889 INFO L479 AbstractCegarLoop]: Abstraction has 3360 states and 4267 transitions. [2020-09-25 13:34:15,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:34:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4267 transitions. [2020-09-25 13:34:15,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 13:34:15,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:15,897 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:15,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:34:15,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:15,898 INFO L82 PathProgramCache]: Analyzing trace with hash 806703639, now seen corresponding path program 1 times [2020-09-25 13:34:15,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:15,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4349556] [2020-09-25 13:34:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking...