/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:25,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:25,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:25,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:25,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:25,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:25,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:25,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:25,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:25,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:25,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:25,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:25,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:25,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:25,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:25,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:25,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:25,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:25,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:25,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:25,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:25,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:25,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:25,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:25,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:25,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:25,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:25,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:25,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:25,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:25,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:25,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:25,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:25,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:25,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:25,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:25,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:25,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:25,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:25,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:25,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:25,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:25,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:25,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:25,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:25,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:25,652 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:25,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:25,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:25,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:25,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:25,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:25,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:25,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:25,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:25,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:25,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:25,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:25,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:25,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:25,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:25,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:25,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:25,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:25,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:25,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:25,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:25,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:25,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:25,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:25,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:25,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:26,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:26,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:26,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:26,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:26,190 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:26,191 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 14:40:26,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76462fabc/f7339c79ec734ac6b39aa8286ca3cc8d/FLAGbcf745298 [2020-09-25 14:40:26,964 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:26,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 14:40:26,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76462fabc/f7339c79ec734ac6b39aa8286ca3cc8d/FLAGbcf745298 [2020-09-25 14:40:27,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76462fabc/f7339c79ec734ac6b39aa8286ca3cc8d [2020-09-25 14:40:27,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:27,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:27,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:27,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:27,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:27,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:27" (1/1) ... [2020-09-25 14:40:27,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:27, skipping insertion in model container [2020-09-25 14:40:27,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:27" (1/1) ... [2020-09-25 14:40:27,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:27,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:27,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:27,773 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:27,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:28,029 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:28,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28 WrapperNode [2020-09-25 14:40:28,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:28,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:28,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:28,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:28,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:28,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:28,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:28,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:28,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (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 14:40:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:29,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:29,656 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:29,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:29 BoogieIcfgContainer [2020-09-25 14:40:29,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:29,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:29,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:29,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:29,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:27" (1/3) ... [2020-09-25 14:40:29,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:29, skipping insertion in model container [2020-09-25 14:40:29,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28" (2/3) ... [2020-09-25 14:40:29,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:29, skipping insertion in model container [2020-09-25 14:40:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:29" (3/3) ... [2020-09-25 14:40:29,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 14:40:29,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:29,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:29,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:29,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:29,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:29,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:29,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:29,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:29,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:29,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:29,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 14:40:29,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:29,823 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] [2020-09-25 14:40:29,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:29,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:29,833 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 14:40:29,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 14:40:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 14:40:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:40:35,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:35,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:40:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:40:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:40:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:35,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:35,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:35,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 14:40:35,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:35,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:35,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411820715] [2020-09-25 14:40:35,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:35,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:35,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:35,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:35,595 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:37,953 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:40:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:37,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 14:40:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:38,008 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:40:38,008 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:40:38,018 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 14:40:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:40:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:40:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:40:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:40:38,156 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 14:40:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:38,157 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:40:38,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:40:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 14:40:38,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:38,174 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] [2020-09-25 14:40:38,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:38,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 14:40:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:38,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006133058] [2020-09-25 14:40:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 14:40:43,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:40:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:40:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 14:40:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:43,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:43,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:40:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:43,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:43,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:40:43,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:43,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:40:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:43,616 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 14:40:43,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006133058] [2020-09-25 14:40:43,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:43,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:43,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261074505] [2020-09-25 14:40:43,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:43,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:43,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:43,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:43,623 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:40:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:46,222 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 14:40:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:46,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 14:40:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:46,241 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 14:40:46,241 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 14:40:46,246 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 14:40:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 14:40:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 14:40:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 14:40:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 14:40:46,341 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 14:40:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:46,343 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 14:40:46,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 14:40:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 14:40:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:46,363 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 14:40:46,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:46,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 14:40:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:46,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21485638] [2020-09-25 14:40:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 14:40:51,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:40:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:40:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:40:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:51,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:51,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:40:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:40:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:40:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:51,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21485638] [2020-09-25 14:40:51,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:51,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:40:51,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979516436] [2020-09-25 14:40:51,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:40:51,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:40:51,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:40:51,933 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 8 states. [2020-09-25 14:40:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:56,360 INFO L93 Difference]: Finished difference Result 3284 states and 4426 transitions. [2020-09-25 14:40:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:40:56,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-25 14:40:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:56,376 INFO L225 Difference]: With dead ends: 3284 [2020-09-25 14:40:56,377 INFO L226 Difference]: Without dead ends: 2000 [2020-09-25 14:40:56,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-09-25 14:40:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1950. [2020-09-25 14:40:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-09-25 14:40:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2318 transitions. [2020-09-25 14:40:56,483 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2318 transitions. Word has length 187 [2020-09-25 14:40:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:56,483 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2318 transitions. [2020-09-25 14:40:56,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:40:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2318 transitions. [2020-09-25 14:40:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:40:56,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:56,494 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] [2020-09-25 14:40:56,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:56,494 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 14:40:56,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:56,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617009284] [2020-09-25 14:40:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 14:41:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:41:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 14:41:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:41:01,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:01,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:41:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:01,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:02,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:02,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 14:41:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:02,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:41:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:02,246 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 14:41:02,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617009284] [2020-09-25 14:41:02,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:02,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:41:02,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16065425] [2020-09-25 14:41:02,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:41:02,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:02,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:41:02,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:02,250 INFO L87 Difference]: Start difference. First operand 1950 states and 2318 transitions. Second operand 10 states. [2020-09-25 14:41:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:05,975 INFO L93 Difference]: Finished difference Result 4773 states and 5993 transitions. [2020-09-25 14:41:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:41:05,977 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 197 [2020-09-25 14:41:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:05,989 INFO L225 Difference]: With dead ends: 4773 [2020-09-25 14:41:05,989 INFO L226 Difference]: Without dead ends: 1918 [2020-09-25 14:41:06,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:41:06,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-09-25 14:41:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1878. [2020-09-25 14:41:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-09-25 14:41:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2188 transitions. [2020-09-25 14:41:06,060 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2188 transitions. Word has length 197 [2020-09-25 14:41:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:06,060 INFO L479 AbstractCegarLoop]: Abstraction has 1878 states and 2188 transitions. [2020-09-25 14:41:06,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:41:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2188 transitions. [2020-09-25 14:41:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 14:41:06,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:06,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-25 14:41:06,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:06,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 14:41:06,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:06,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868048561] [2020-09-25 14:41:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 14:41:11,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 14:41:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:41:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 14:41:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:11,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:11,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:41:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 14:41:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 14:41:11,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:41:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:41:11,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868048561] [2020-09-25 14:41:11,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:11,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:11,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179997641] [2020-09-25 14:41:11,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:11,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:11,976 INFO L87 Difference]: Start difference. First operand 1878 states and 2188 transitions. Second operand 9 states.