/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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:39:29,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:39:29,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:39:29,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:39:29,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:39:29,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:39:29,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:39:29,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:39:29,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:39:29,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:39:29,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:39:29,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:39:29,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:39:29,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:39:29,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:39:29,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:39:29,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:39:29,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:39:29,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:39:29,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:39:29,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:39:29,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:39:29,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:39:29,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:39:29,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:39:29,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:39:29,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:39:29,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:39:29,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:39:29,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:39:29,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:39:29,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:39:29,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:39:29,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:39:29,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:39:29,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:39:29,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:39:29,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:39:29,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:39:29,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:39:29,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:39:29,645 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 14:39:29,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:39:29,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:39:29,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:39:29,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:39:29,694 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:39:29,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:39:29,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:39:29,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:39:29,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:39:29,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:39:29,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:39:29,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:39:29,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:39:29,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:39:29,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:39:29,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:39:29,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:39:29,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:39:29,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:39:29,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:39:29,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:39:29,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:39:29,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:39:29,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:39:29,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:39:29,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:39:29,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:39:29,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:39:29,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:39:29,700 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 14:39:30,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:39:30,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:39:30,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:39:30,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:39:30,181 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:39:30,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-25 14:39:30,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d63dc1220/8434fbca67604ed7b01610bf3e44d4e2/FLAG052fddfe5 [2020-09-25 14:39:30,952 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:39:30,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-25 14:39:30,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d63dc1220/8434fbca67604ed7b01610bf3e44d4e2/FLAG052fddfe5 [2020-09-25 14:39:31,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d63dc1220/8434fbca67604ed7b01610bf3e44d4e2 [2020-09-25 14:39:31,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:39:31,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:39:31,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:31,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:39:31,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:39:31,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:31" (1/1) ... [2020-09-25 14:39:31,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:31, skipping insertion in model container [2020-09-25 14:39:31,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:31" (1/1) ... [2020-09-25 14:39:31,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:39:31,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:39:31,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:31,788 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:39:32,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:32,025 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:39:32,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32 WrapperNode [2020-09-25 14:39:32,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:32,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:39:32,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:39:32,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:39:32,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (1/1) ... [2020-09-25 14:39:32,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:39:32,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:39:32,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:39:32,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:39:32,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (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 14:39:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:39:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:39:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:39:32,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:39:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:39:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:39:33,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:39:33,686 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:39:33,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:33 BoogieIcfgContainer [2020-09-25 14:39:33,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:39:33,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:39:33,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:39:33,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:39:33,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:39:31" (1/3) ... [2020-09-25 14:39:33,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e7aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:33, skipping insertion in model container [2020-09-25 14:39:33,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:32" (2/3) ... [2020-09-25 14:39:33,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e7aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:33, skipping insertion in model container [2020-09-25 14:39:33,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:33" (3/3) ... [2020-09-25 14:39:33,706 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label27.c [2020-09-25 14:39:33,718 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:39:33,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:39:33,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:39:33,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:39:33,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:39:33,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:39:33,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:39:33,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:39:33,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:39:33,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:39:33,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:39:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:39:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 14:39:33,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:33,851 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] [2020-09-25 14:39:33,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash 38595514, now seen corresponding path program 1 times [2020-09-25 14:39:33,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:33,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523169948] [2020-09-25 14:39:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 14:39:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:39:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-09-25 14:39:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:39,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:39:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:39:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 14:39:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:39:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:39,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:39:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:39:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:39,481 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 14:39:39,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523169948] [2020-09-25 14:39:39,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:39:39,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:39:39,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172823219] [2020-09-25 14:39:39,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:39:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:39,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:39:39,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:39:39,516 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:39:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:41,875 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 14:39:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:39:41,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-09-25 14:39:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:41,911 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 14:39:41,911 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 14:39:41,923 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 14:39:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 14:39:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 14:39:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 14:39:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 14:39:42,056 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 121 [2020-09-25 14:39:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:42,061 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 14:39:42,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:39:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 14:39:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:39:42,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:42,084 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] [2020-09-25 14:39:42,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:39:42,085 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:42,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1106634726, now seen corresponding path program 1 times [2020-09-25 14:39:42,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:42,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286626449] [2020-09-25 14:39:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:47,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:47,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:39:47,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:39:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:39:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:47,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:39:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:39:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:39:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:47,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:39:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:47,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:47,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:39:47,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:47,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:39:47,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:47,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:39:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:47,486 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 14:39:47,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286626449] [2020-09-25 14:39:47,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:47,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:39:47,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170809029] [2020-09-25 14:39:47,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:39:47,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:47,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:39:47,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:39:47,493 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 6 states. [2020-09-25 14:39:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:49,257 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 14:39:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:49,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-09-25 14:39:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:49,278 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 14:39:49,278 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 14:39:49,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:39:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 14:39:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 14:39:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 14:39:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 14:39:49,337 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 139 [2020-09-25 14:39:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:49,339 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 14:39:49,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:39:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 14:39:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:39:49,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:49,347 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:39:49,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:39:49,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash 234137921, now seen corresponding path program 1 times [2020-09-25 14:39:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:49,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300871147] [2020-09-25 14:39:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:50,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 14:39:50,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:39:50,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-09-25 14:39:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:50,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:39:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:39:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:39:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:50,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:50,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:50,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:39:50,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:50,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:50,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:50,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:39:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:50,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:50,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:39:50,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 14:39:50,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:50,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:39:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:39:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:50,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300871147] [2020-09-25 14:39:50,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:39:50,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:39:50,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159993648] [2020-09-25 14:39:50,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:39:50,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:39:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:39:50,613 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 8 states. [2020-09-25 14:39:53,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:53,747 INFO L93 Difference]: Finished difference Result 2587 states and 3483 transitions. [2020-09-25 14:39:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:39:53,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 14:39:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:53,758 INFO L225 Difference]: With dead ends: 2587 [2020-09-25 14:39:53,759 INFO L226 Difference]: Without dead ends: 1793 [2020-09-25 14:39:53,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:39:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-09-25 14:39:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1709. [2020-09-25 14:39:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 14:39:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2247 transitions. [2020-09-25 14:39:53,829 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2247 transitions. Word has length 147 [2020-09-25 14:39:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:53,829 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2247 transitions. [2020-09-25 14:39:53,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:39:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2247 transitions. [2020-09-25 14:39:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 14:39:53,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:53,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:53,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:39:53,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1692622194, now seen corresponding path program 1 times [2020-09-25 14:39:53,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:53,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044820058] [2020-09-25 14:39:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:56,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:58,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:58,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 14:39:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 14:39:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:39:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:59,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:59,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:39:59,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:59,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:59,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:39:59,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:39:59,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:59,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:39:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:59,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044820058] [2020-09-25 14:39:59,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:59,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:59,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736231612] [2020-09-25 14:39:59,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:59,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:59,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:59,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:59,195 INFO L87 Difference]: Start difference. First operand 1709 states and 2247 transitions. Second operand 5 states. [2020-09-25 14:40:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:01,180 INFO L93 Difference]: Finished difference Result 2967 states and 3934 transitions. [2020-09-25 14:40:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:01,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 14:40:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:01,191 INFO L225 Difference]: With dead ends: 2967 [2020-09-25 14:40:01,191 INFO L226 Difference]: Without dead ends: 1280 [2020-09-25 14:40:01,198 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 14:40:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2020-09-25 14:40:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1114. [2020-09-25 14:40:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-09-25 14:40:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1329 transitions. [2020-09-25 14:40:01,239 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1329 transitions. Word has length 159 [2020-09-25 14:40:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:01,240 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1329 transitions. [2020-09-25 14:40:01,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1329 transitions. [2020-09-25 14:40:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:40:01,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:01,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:01,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:01,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash 839485037, now seen corresponding path program 1 times [2020-09-25 14:40:01,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:01,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255963274] [2020-09-25 14:40:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:40:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-09-25 14:40:04,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:04,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:40:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:04,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:04,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:04,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:04,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:04,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:40:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:40:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:04,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:04,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:40:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:40:04,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:04,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:40:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:40:04,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255963274] [2020-09-25 14:40:04,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:04,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:40:04,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588125774] [2020-09-25 14:40:04,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:40:04,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:40:04,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:04,573 INFO L87 Difference]: Start difference. First operand 1114 states and 1329 transitions. Second operand 7 states. [2020-09-25 14:40:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:08,296 INFO L93 Difference]: Finished difference Result 3244 states and 4188 transitions. [2020-09-25 14:40:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:40:08,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 14:40:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:08,310 INFO L225 Difference]: With dead ends: 3244 [2020-09-25 14:40:08,310 INFO L226 Difference]: Without dead ends: 2152 [2020-09-25 14:40:08,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-09-25 14:40:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1829. [2020-09-25 14:40:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-09-25 14:40:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2198 transitions. [2020-09-25 14:40:08,385 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2198 transitions. Word has length 165 [2020-09-25 14:40:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:08,386 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2198 transitions. [2020-09-25 14:40:08,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:40:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2198 transitions. [2020-09-25 14:40:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 14:40:08,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:08,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:40:08,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:08,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1231543138, now seen corresponding path program 1 times [2020-09-25 14:40:08,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:08,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98571599] [2020-09-25 14:40:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:11,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 14:40:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3515 [2020-09-25 14:40:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:40:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:12,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:40:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:12,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 14:40:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:40:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:40:12,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98571599] [2020-09-25 14:40:12,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:12,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:40:12,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191606192] [2020-09-25 14:40:12,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:40:12,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:12,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:40:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:12,233 INFO L87 Difference]: Start difference. First operand 1829 states and 2198 transitions. Second operand 6 states. [2020-09-25 14:40:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:14,385 INFO L93 Difference]: Finished difference Result 5094 states and 6720 transitions. [2020-09-25 14:40:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:40:14,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-09-25 14:40:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:14,404 INFO L225 Difference]: With dead ends: 5094 [2020-09-25 14:40:14,404 INFO L226 Difference]: Without dead ends: 2746 [2020-09-25 14:40:14,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:40:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-09-25 14:40:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2560. [2020-09-25 14:40:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2560 states. [2020-09-25 14:40:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 3078 transitions. [2020-09-25 14:40:14,506 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 3078 transitions. Word has length 171 [2020-09-25 14:40:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:14,506 INFO L479 AbstractCegarLoop]: Abstraction has 2560 states and 3078 transitions. [2020-09-25 14:40:14,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:40:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 3078 transitions. [2020-09-25 14:40:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 14:40:14,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:14,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:14,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:40:14,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:14,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1502054797, now seen corresponding path program 1 times [2020-09-25 14:40:14,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:14,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816054122] [2020-09-25 14:40:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 14:40:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3471 [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:40:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:18,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:40:18,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:40:18,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:40:18,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 14:40:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:40:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 14:40:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:40:18,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:18,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:40:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:40:18,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816054122] [2020-09-25 14:40:18,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:18,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:40:18,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86704631] [2020-09-25 14:40:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:40:18,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:40:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:18,314 INFO L87 Difference]: Start difference. First operand 2560 states and 3078 transitions. Second operand 7 states.