/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=0.5 --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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:18,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:18,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:18,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:18,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:18,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:18,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:18,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:18,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:18,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:18,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:18,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:18,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:18,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:18,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:18,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:18,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:18,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:18,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:18,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:18,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:18,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:18,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:18,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:18,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:18,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:18,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:18,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:18,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:18,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:18,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:18,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:18,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:18,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:18,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:18,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:18,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:18,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:18,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:18,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:18,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:18,620 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 14:41:18,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:18,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:18,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:18,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:18,649 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:18,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:18,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:18,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:18,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:18,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:18,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:18,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:18,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:18,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:18,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:18,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:18,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:18,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:18,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:18,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:18,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:18,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:18,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:18,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:18,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:18,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:18,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:18,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:18,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:18,655 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:41:19,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:19,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:19,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:19,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:19,122 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:19,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 14:41:19,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813a08433/d814acfe0ae84f4bbe4cfa8158e8f7ee/FLAG50beb5d8b [2020-09-25 14:41:19,914 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:19,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 14:41:19,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813a08433/d814acfe0ae84f4bbe4cfa8158e8f7ee/FLAG50beb5d8b [2020-09-25 14:41:20,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/813a08433/d814acfe0ae84f4bbe4cfa8158e8f7ee [2020-09-25 14:41:20,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:20,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:20,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:20,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:20,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:20,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:20,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20, skipping insertion in model container [2020-09-25 14:41:20,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:20,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:20,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:20,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:20,834 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:20,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:20,959 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:20,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20 WrapperNode [2020-09-25 14:41:20,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:20,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:20,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:20,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:20,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:20,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:20,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:21,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:21,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:21,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:21,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (1/1) ... [2020-09-25 14:41:21,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:21,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:21,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:21,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:21,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (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 14:41:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:22,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:22,651 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:22,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:22 BoogieIcfgContainer [2020-09-25 14:41:22,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:22,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:22,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:22,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:22,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:20" (1/3) ... [2020-09-25 14:41:22,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:22, skipping insertion in model container [2020-09-25 14:41:22,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:20" (2/3) ... [2020-09-25 14:41:22,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:22, skipping insertion in model container [2020-09-25 14:41:22,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:22" (3/3) ... [2020-09-25 14:41:22,671 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 14:41:22,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:22,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:22,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:22,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:22,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:22,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:22,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:22,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:22,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:22,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:22,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:41:22,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:22,797 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] [2020-09-25 14:41:22,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:22,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 14:41:22,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:22,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 14:41:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:41:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-25 14:41:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 14:41:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:41:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:24,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:41:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:24,237 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 14:41:24,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 14:41:24,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:24,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:41:24,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840651924] [2020-09-25 14:41:24,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:24,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:24,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:24,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:24,271 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:41:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:27,057 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 14:41:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:41:27,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 14:41:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:27,085 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:41:27,085 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 14:41:27,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 14:41:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 14:41:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:41:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 14:41:27,232 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 64 [2020-09-25 14:41:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:27,233 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 14:41:27,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 14:41:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 14:41:27,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:27,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:27,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:27,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash -685131667, now seen corresponding path program 1 times [2020-09-25 14:41:27,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:27,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702323873] [2020-09-25 14:41:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 14:41:32,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:41:32,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:32,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 14:41:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:32,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:41:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 14:41:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:32,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702323873] [2020-09-25 14:41:32,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:32,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:32,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664094372] [2020-09-25 14:41:32,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:32,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:32,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:32,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:32,738 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 14:41:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:36,016 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 14:41:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:36,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 14:41:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:36,033 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 14:41:36,033 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 14:41:36,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:41:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 14:41:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1363. [2020-09-25 14:41:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 14:41:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1798 transitions. [2020-09-25 14:41:36,145 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1798 transitions. Word has length 153 [2020-09-25 14:41:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:36,150 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1798 transitions. [2020-09-25 14:41:36,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1798 transitions. [2020-09-25 14:41:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:41:36,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:36,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:36,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:36,164 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash -188026709, now seen corresponding path program 1 times [2020-09-25 14:41:36,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:36,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901573416] [2020-09-25 14:41:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:41:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:41:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 14:41:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:41,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:41:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:41:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 14:41:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:41:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:41,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901573416] [2020-09-25 14:41:41,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:41,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:41,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116093152] [2020-09-25 14:41:41,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:41,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:41,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:41,650 INFO L87 Difference]: Start difference. First operand 1363 states and 1798 transitions. Second operand 7 states. [2020-09-25 14:41:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:43,887 INFO L93 Difference]: Finished difference Result 3741 states and 5213 transitions. [2020-09-25 14:41:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:43,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 14:41:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:43,906 INFO L225 Difference]: With dead ends: 3741 [2020-09-25 14:41:43,906 INFO L226 Difference]: Without dead ends: 2393 [2020-09-25 14:41:43,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2020-09-25 14:41:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2153. [2020-09-25 14:41:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 14:41:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2730 transitions. [2020-09-25 14:41:44,018 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2730 transitions. Word has length 156 [2020-09-25 14:41:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:44,019 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2730 transitions. [2020-09-25 14:41:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2730 transitions. [2020-09-25 14:41:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 14:41:44,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:44,027 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, 2, 2, 2, 2, 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 14:41:44,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:44,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:44,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 14:41:44,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:44,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952484190] [2020-09-25 14:41:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 14:41:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:49,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:41:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:41:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 14:41:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:41:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:49,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 14:41:49,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:41:49,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952484190] [2020-09-25 14:41:49,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:49,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:49,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036377488] [2020-09-25 14:41:49,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:49,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:49,853 INFO L87 Difference]: Start difference. First operand 2153 states and 2730 transitions. Second operand 9 states. [2020-09-25 14:41:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:54,195 INFO L93 Difference]: Finished difference Result 6057 states and 8572 transitions. [2020-09-25 14:41:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:41:54,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 14:41:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:54,226 INFO L225 Difference]: With dead ends: 6057 [2020-09-25 14:41:54,227 INFO L226 Difference]: Without dead ends: 3919 [2020-09-25 14:41:54,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:41:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2020-09-25 14:41:54,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3626. [2020-09-25 14:41:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3626 states. [2020-09-25 14:41:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4720 transitions. [2020-09-25 14:41:54,399 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4720 transitions. Word has length 232 [2020-09-25 14:41:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:54,399 INFO L479 AbstractCegarLoop]: Abstraction has 3626 states and 4720 transitions. [2020-09-25 14:41:54,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:41:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4720 transitions. [2020-09-25 14:41:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 14:41:54,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:54,408 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:54,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:54,408 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times [2020-09-25 14:41:54,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:54,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445633550] [2020-09-25 14:41:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 14:41:59,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:41:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 14:41:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:41:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:41:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:59,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:59,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:59,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:41:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:41:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:41:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:00,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 14:42:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:00,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:42:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:42:00,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445633550] [2020-09-25 14:42:00,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:00,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:00,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564735569] [2020-09-25 14:42:00,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:00,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:00,484 INFO L87 Difference]: Start difference. First operand 3626 states and 4720 transitions. Second operand 8 states. [2020-09-25 14:42:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:04,484 INFO L93 Difference]: Finished difference Result 8076 states and 10856 transitions. [2020-09-25 14:42:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:04,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 14:42:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:04,508 INFO L225 Difference]: With dead ends: 8076 [2020-09-25 14:42:04,508 INFO L226 Difference]: Without dead ends: 4577 [2020-09-25 14:42:04,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2020-09-25 14:42:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4227. [2020-09-25 14:42:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-09-25 14:42:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5377 transitions. [2020-09-25 14:42:04,644 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5377 transitions. Word has length 236 [2020-09-25 14:42:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:04,644 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 5377 transitions. [2020-09-25 14:42:04,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5377 transitions. [2020-09-25 14:42:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 14:42:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:04,652 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:04,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:04,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2080459986, now seen corresponding path program 1 times [2020-09-25 14:42:04,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:04,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004141123] [2020-09-25 14:42:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...