/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:10,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:10,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:10,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:10,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:10,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:10,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:10,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:10,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:10,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:10,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:10,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:10,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:10,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:10,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:10,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:10,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:10,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:10,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:10,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:10,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:10,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:10,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:10,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:10,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:10,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:10,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:10,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:10,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:10,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:10,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:10,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:10,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:10,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:10,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:10,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:10,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:10,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:10,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:10,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:10,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:10,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:33:10,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:10,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:10,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:10,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:10,691 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:10,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:10,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:10,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:10,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:10,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:10,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:10,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:10,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:10,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:10,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:10,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:10,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:10,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:10,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:10,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:10,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:10,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:10,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:10,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:10,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:10,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:10,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:10,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:10,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:10,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:11,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:11,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:11,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:11,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:11,178 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:11,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 13:33:11,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f11344fa9/c9495156d28344f4ac4a4e15348ccd18/FLAGf76df83aa [2020-09-25 13:33:11,946 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:11,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 13:33:11,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f11344fa9/c9495156d28344f4ac4a4e15348ccd18/FLAGf76df83aa [2020-09-25 13:33:12,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f11344fa9/c9495156d28344f4ac4a4e15348ccd18 [2020-09-25 13:33:12,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:12,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:12,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:12,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:12,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:12,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:12" (1/1) ... [2020-09-25 13:33:12,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:12, skipping insertion in model container [2020-09-25 13:33:12,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:12" (1/1) ... [2020-09-25 13:33:12,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:12,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:12,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:12,866 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:13,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:13,161 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:13,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13 WrapperNode [2020-09-25 13:33:13,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:13,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:13,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:13,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:13,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... [2020-09-25 13:33:13,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:13,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:13,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:13,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:13,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:13,372 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:14,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:14,749 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:14,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:14 BoogieIcfgContainer [2020-09-25 13:33:14,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:14,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:14,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:14,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:14,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:12" (1/3) ... [2020-09-25 13:33:14,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:14, skipping insertion in model container [2020-09-25 13:33:14,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:13" (2/3) ... [2020-09-25 13:33:14,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:14, skipping insertion in model container [2020-09-25 13:33:14,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:14" (3/3) ... [2020-09-25 13:33:14,777 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 13:33:14,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:14,807 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:14,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:14,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:14,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:14,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:14,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:14,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:14,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:14,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:14,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 13:33:14,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:14,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:14,925 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:14,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:14,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 13:33:14,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:14,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:33:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:33:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:33:20,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:33:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 13:33:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:20,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:20,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:33:20,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:20,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:20,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:33:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:20,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 13:33:20,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:20,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:20,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244811311] [2020-09-25 13:33:20,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:20,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:20,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:20,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:20,714 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:22,947 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:33:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:22,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 13:33:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:22,994 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:33:22,995 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:33:23,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:33:23,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:33:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:33:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:33:23,120 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 13:33:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:23,121 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:33:23,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:33:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 13:33:23,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:23,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:23,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:23,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:23,135 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 13:33:23,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:23,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996197330] [2020-09-25 13:33:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 13:33:28,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:33:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:33:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:33:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:33:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:28,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:28,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:33:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:28,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996197330] [2020-09-25 13:33:28,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:28,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:28,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337031714] [2020-09-25 13:33:28,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:28,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:28,498 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:33:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:30,436 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 13:33:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:30,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 13:33:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:30,446 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 13:33:30,446 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 13:33:30,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 13:33:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 13:33:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 13:33:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 13:33:30,512 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 13:33:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:30,534 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 13:33:30,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 13:33:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 13:33:30,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:30,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:30,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:30,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 13:33:30,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:30,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402364026] [2020-09-25 13:33:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 13:33:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:35,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 13:33:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 13:33:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:35,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:35,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:35,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:33:35,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:33:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:35,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402364026] [2020-09-25 13:33:35,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:35,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:35,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8213414] [2020-09-25 13:33:35,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:35,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:35,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:35,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:35,867 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 13:33:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:37,945 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 13:33:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:37,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 13:33:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:37,955 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 13:33:37,955 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 13:33:37,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 13:33:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 13:33:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 13:33:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 13:33:38,003 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-25 13:33:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:38,003 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 13:33:38,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 13:33:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 13:33:38,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:38,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:38,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:38,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 13:33:38,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:38,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516239736] [2020-09-25 13:33:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 13:33:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:33:43,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:43,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 13:33:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:33:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:43,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:43,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:43,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:43,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:43,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:33:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:33:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:43,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516239736] [2020-09-25 13:33:43,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:43,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:43,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168381586] [2020-09-25 13:33:43,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:43,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:43,535 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 8 states. [2020-09-25 13:33:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:46,825 INFO L93 Difference]: Finished difference Result 3026 states and 3931 transitions. [2020-09-25 13:33:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:46,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-09-25 13:33:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:46,838 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 13:33:46,838 INFO L226 Difference]: Without dead ends: 1976 [2020-09-25 13:33:46,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-09-25 13:33:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1924. [2020-09-25 13:33:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 13:33:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2302 transitions. [2020-09-25 13:33:46,912 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2302 transitions. Word has length 202 [2020-09-25 13:33:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:46,912 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2302 transitions. [2020-09-25 13:33:46,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2302 transitions. [2020-09-25 13:33:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 13:33:46,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:46,922 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:46,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:46,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 13:33:46,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:46,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66176610] [2020-09-25 13:33:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4298 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:51,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:51,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:51,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:51,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:51,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:33:51,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:33:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 13:33:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:51,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 13:33:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:51,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66176610] [2020-09-25 13:33:51,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:51,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:33:51,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850244619] [2020-09-25 13:33:51,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:33:51,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:51,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:33:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:51,646 INFO L87 Difference]: Start difference. First operand 1924 states and 2302 transitions. Second operand 7 states. [2020-09-25 13:33:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:52,849 INFO L93 Difference]: Finished difference Result 3783 states and 4553 transitions. [2020-09-25 13:33:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:33:52,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 13:33:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:52,860 INFO L225 Difference]: With dead ends: 3783 [2020-09-25 13:33:52,860 INFO L226 Difference]: Without dead ends: 1881 [2020-09-25 13:33:52,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:33:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-25 13:33:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1861. [2020-09-25 13:33:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-09-25 13:33:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2211 transitions. [2020-09-25 13:33:52,918 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2211 transitions. Word has length 226 [2020-09-25 13:33:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:52,919 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2211 transitions. [2020-09-25 13:33:52,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:33:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2211 transitions. [2020-09-25 13:33:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 13:33:52,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:52,927 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:52,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:52,927 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 13:33:52,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:52,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242311139] [2020-09-25 13:33:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:57,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 13:33:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:33:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 13:33:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:33:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:58,593 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-09-25 13:33:58,740 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-09-25 13:33:58,928 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2020-09-25 13:33:59,133 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2020-09-25 13:33:59,297 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 35 [2020-09-25 13:33:59,441 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 30 [2020-09-25 13:33:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:59,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:59,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:59,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:59,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:59,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:33:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:33:59,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:59,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:33:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:59,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242311139] [2020-09-25 13:33:59,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:59,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:33:59,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879577232] [2020-09-25 13:33:59,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:33:59,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:33:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:33:59,918 INFO L87 Difference]: Start difference. First operand 1861 states and 2211 transitions. Second operand 14 states. [2020-09-25 13:34:00,651 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 13:34:00,831 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 108