/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:25,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:25,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:25,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:25,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:25,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:25,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:25,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:25,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:25,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:25,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:25,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:25,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:25,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:25,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:25,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:25,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:25,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:25,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:25,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:25,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:25,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:25,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:25,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:25,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:25,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:25,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:25,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:25,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:25,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:25,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:25,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:25,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:25,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:25,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:25,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:25,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:25,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:25,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:25,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:25,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:25,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:19:25,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:25,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:25,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:25,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:25,695 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:25,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:25,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:25,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:25,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:25,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:25,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:25,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:25,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:25,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:25,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:25,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:25,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:25,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:25,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:25,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:25,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:25,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:25,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:25,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:25,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:25,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:25,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:25,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:25,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:25,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:26,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:26,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:26,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:26,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:26,184 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:26,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 11:19:26,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03895fc9/f11294434c8b4410a9bd590a492d665e/FLAG0aed0870c [2020-09-25 11:19:26,955 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:26,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 11:19:26,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03895fc9/f11294434c8b4410a9bd590a492d665e/FLAG0aed0870c [2020-09-25 11:19:27,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03895fc9/f11294434c8b4410a9bd590a492d665e [2020-09-25 11:19:27,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:27,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:27,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:27,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:27,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:27,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:27" (1/1) ... [2020-09-25 11:19:27,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:27, skipping insertion in model container [2020-09-25 11:19:27,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:27" (1/1) ... [2020-09-25 11:19:27,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:27,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:27,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:27,905 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:28,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:28,051 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:28,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28 WrapperNode [2020-09-25 11:19:28,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:28,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:28,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:28,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:28,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:28,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:28,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:28,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:28,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:29,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:29,755 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:29,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:29 BoogieIcfgContainer [2020-09-25 11:19:29,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:29,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:29,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:29,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:29,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:27" (1/3) ... [2020-09-25 11:19:29,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:29, skipping insertion in model container [2020-09-25 11:19:29,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28" (2/3) ... [2020-09-25 11:19:29,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:29, skipping insertion in model container [2020-09-25 11:19:29,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:29" (3/3) ... [2020-09-25 11:19:29,775 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 11:19:29,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:29,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:29,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:29,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:29,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:29,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:29,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:29,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:29,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:29,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:29,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:19:29,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:29,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:29,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 11:19:29,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:29,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872194903] [2020-09-25 11:19:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:30,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:19:30,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:19:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-09-25 11:19:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:30,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:19:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:19:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:31,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:19:31,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:31,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:31,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872194903] [2020-09-25 11:19:31,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:31,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:19:31,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522352612] [2020-09-25 11:19:31,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:31,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:31,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:31,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:31,200 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:19:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:34,104 INFO L93 Difference]: Finished difference Result 1256 states and 1826 transitions. [2020-09-25 11:19:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:19:34,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 11:19:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:34,132 INFO L225 Difference]: With dead ends: 1256 [2020-09-25 11:19:34,133 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 11:19:34,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 11:19:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 697. [2020-09-25 11:19:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 11:19:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 864 transitions. [2020-09-25 11:19:34,265 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 864 transitions. Word has length 51 [2020-09-25 11:19:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:34,266 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 864 transitions. [2020-09-25 11:19:34,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 864 transitions. [2020-09-25 11:19:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:19:34,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:34,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:34,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:34,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1234177337, now seen corresponding path program 1 times [2020-09-25 11:19:34,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:34,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795950196] [2020-09-25 11:19:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:19:39,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:19:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:19:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:39,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:39,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:19:39,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 11:19:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 11:19:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:39,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795950196] [2020-09-25 11:19:39,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:39,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:39,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744624980] [2020-09-25 11:19:39,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:39,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:39,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:39,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:39,783 INFO L87 Difference]: Start difference. First operand 697 states and 864 transitions. Second operand 5 states. [2020-09-25 11:19:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:41,720 INFO L93 Difference]: Finished difference Result 1845 states and 2386 transitions. [2020-09-25 11:19:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:41,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 11:19:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:41,733 INFO L225 Difference]: With dead ends: 1845 [2020-09-25 11:19:41,734 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 11:19:41,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 11:19:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2020-09-25 11:19:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-25 11:19:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1446 transitions. [2020-09-25 11:19:41,808 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1446 transitions. Word has length 147 [2020-09-25 11:19:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:41,814 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1446 transitions. [2020-09-25 11:19:41,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1446 transitions. [2020-09-25 11:19:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 11:19:41,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:41,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:41,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:41,837 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:41,838 INFO L82 PathProgramCache]: Analyzing trace with hash 731940114, now seen corresponding path program 1 times [2020-09-25 11:19:41,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:41,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920006999] [2020-09-25 11:19:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 11:19:46,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:46,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 11:19:46,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 11:19:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:19:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:19:47,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:47,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 11:19:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 11:19:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:47,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 11:19:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:19:47,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:47,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:19:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 121 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:47,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920006999] [2020-09-25 11:19:47,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:47,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:47,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486047639] [2020-09-25 11:19:47,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:47,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:47,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:47,707 INFO L87 Difference]: Start difference. First operand 1153 states and 1446 transitions. Second operand 6 states. [2020-09-25 11:19:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:49,957 INFO L93 Difference]: Finished difference Result 2811 states and 3566 transitions. [2020-09-25 11:19:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:19:49,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 245 [2020-09-25 11:19:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:49,973 INFO L225 Difference]: With dead ends: 2811 [2020-09-25 11:19:49,973 INFO L226 Difference]: Without dead ends: 1673 [2020-09-25 11:19:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-09-25 11:19:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1490. [2020-09-25 11:19:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-09-25 11:19:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1842 transitions. [2020-09-25 11:19:50,058 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1842 transitions. Word has length 245 [2020-09-25 11:19:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:50,060 INFO L479 AbstractCegarLoop]: Abstraction has 1490 states and 1842 transitions. [2020-09-25 11:19:50,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:50,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1842 transitions. [2020-09-25 11:19:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 11:19:50,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:50,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:50,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:50,082 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1115685188, now seen corresponding path program 1 times [2020-09-25 11:19:50,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:50,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700008202] [2020-09-25 11:19:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 11:19:55,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:19:55,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 11:19:55,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:19:55,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:55,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:19:55,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:19:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:19:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:19:55,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:19:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 11:19:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 11:19:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:19:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:55,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700008202] [2020-09-25 11:19:55,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:55,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:55,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924921558] [2020-09-25 11:19:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:55,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:55,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:55,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:55,948 INFO L87 Difference]: Start difference. First operand 1490 states and 1842 transitions. Second operand 6 states. [2020-09-25 11:19:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:57,987 INFO L93 Difference]: Finished difference Result 3809 states and 4791 transitions. [2020-09-25 11:19:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:19:57,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-09-25 11:19:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:58,006 INFO L225 Difference]: With dead ends: 3809 [2020-09-25 11:19:58,006 INFO L226 Difference]: Without dead ends: 2334 [2020-09-25 11:19:58,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2020-09-25 11:19:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2283. [2020-09-25 11:19:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-09-25 11:19:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2859 transitions. [2020-09-25 11:19:58,103 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2859 transitions. Word has length 254 [2020-09-25 11:19:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:58,104 INFO L479 AbstractCegarLoop]: Abstraction has 2283 states and 2859 transitions. [2020-09-25 11:19:58,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2859 transitions. [2020-09-25 11:19:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 11:19:58,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:58,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:58,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:58,114 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:58,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:58,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1950613258, now seen corresponding path program 1 times [2020-09-25 11:19:58,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:58,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16093376] [2020-09-25 11:19:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:58,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 11:20:03,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:20:03,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 11:20:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:20:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 11:20:03,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:20:03,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 11:20:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:20:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:20:04,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16093376] [2020-09-25 11:20:04,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:04,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:04,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936111181] [2020-09-25 11:20:04,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:04,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:04,151 INFO L87 Difference]: Start difference. First operand 2283 states and 2859 transitions. Second operand 9 states. [2020-09-25 11:20:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:08,664 INFO L93 Difference]: Finished difference Result 6171 states and 8571 transitions. [2020-09-25 11:20:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:20:08,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 275 [2020-09-25 11:20:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:08,696 INFO L225 Difference]: With dead ends: 6171 [2020-09-25 11:20:08,696 INFO L226 Difference]: Without dead ends: 4053 [2020-09-25 11:20:08,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:20:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-09-25 11:20:08,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 3740. [2020-09-25 11:20:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3740 states. [2020-09-25 11:20:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 4926 transitions. [2020-09-25 11:20:08,904 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 4926 transitions. Word has length 275 [2020-09-25 11:20:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:08,905 INFO L479 AbstractCegarLoop]: Abstraction has 3740 states and 4926 transitions. [2020-09-25 11:20:08,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 4926 transitions. [2020-09-25 11:20:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 11:20:08,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:08,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:08,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:08,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:08,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:08,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1654703250, now seen corresponding path program 1 times [2020-09-25 11:20:08,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:08,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573259278] [2020-09-25 11:20:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 11:20:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 11:20:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:20:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:20:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:20:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:14,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:14,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 11:20:14,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:20:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 11:20:14,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:14,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:20:14,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 11:20:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:15,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573259278] [2020-09-25 11:20:15,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:15,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:20:15,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764039087] [2020-09-25 11:20:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:15,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:15,038 INFO L87 Difference]: Start difference. First operand 3740 states and 4926 transitions. Second operand 7 states.