/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_single_elem_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:59:22,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:59:22,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:59:22,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:59:22,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:59:22,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:59:22,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:59:22,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:59:22,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:59:22,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:59:22,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:59:22,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:59:22,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:59:22,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:59:22,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:59:22,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:59:22,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:59:22,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:59:22,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:59:22,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:59:22,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:59:22,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:59:22,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:59:22,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:59:22,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:59:22,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:59:22,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:59:22,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:59:22,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:59:22,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:59:22,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:59:22,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:59:22,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:59:22,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:59:22,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:59:22,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:59:22,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:59:22,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:59:22,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:59:22,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:59:22,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:59:22,332 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 [2020-10-13 23:59:22,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:59:22,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:59:22,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:59:22,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:59:22,356 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:59:22,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:59:22,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:59:22,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:59:22,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:59:22,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:59:22,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:59:22,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:59:22,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:59:22,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:59:22,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:59:22,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:59:22,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:59:22,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:59:22,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:59:22,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:59:22,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:59:22,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:59:22,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:59:22,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:59:22,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:59:22,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:59:22,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:59:22,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:59:22,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:59:22,361 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:59:22,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:59:22,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:59:22,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:59:22,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:59:22,689 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:59:22,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_single_elem_init.i [2020-10-13 23:59:22,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/309ed7906/51ff684ffe114803bff811fb419d8f7f/FLAGec8e07423 [2020-10-13 23:59:23,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:59:23,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_single_elem_init.i [2020-10-13 23:59:23,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/309ed7906/51ff684ffe114803bff811fb419d8f7f/FLAGec8e07423 [2020-10-13 23:59:23,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/309ed7906/51ff684ffe114803bff811fb419d8f7f [2020-10-13 23:59:23,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:59:23,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:59:23,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:59:23,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:59:23,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:59:23,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4137acd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23, skipping insertion in model container [2020-10-13 23:59:23,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:59:23,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:59:23,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:59:23,788 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:59:23,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:59:23,834 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:59:23,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23 WrapperNode [2020-10-13 23:59:23,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:59:23,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:59:23,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:59:23,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:59:23,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (1/1) ... [2020-10-13 23:59:23,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:59:23,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:59:23,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:59:23,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:59:23,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (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 [2020-10-13 23:59:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:59:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:59:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:59:24,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:59:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:59:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:59:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:59:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:59:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:59:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:59:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:59:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:59:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:59:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:59:24,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:59:24,300 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 23:59:24,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:59:24 BoogieIcfgContainer [2020-10-13 23:59:24,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:59:24,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:59:24,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:59:24,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:59:24,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:59:23" (1/3) ... [2020-10-13 23:59:24,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147f03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:59:24, skipping insertion in model container [2020-10-13 23:59:24,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:23" (2/3) ... [2020-10-13 23:59:24,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147f03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:59:24, skipping insertion in model container [2020-10-13 23:59:24,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:59:24" (3/3) ... [2020-10-13 23:59:24,317 INFO L109 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2020-10-13 23:59:24,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:59:24,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:59:24,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:59:24,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:59:24,390 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:59:24,390 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:59:24,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:59:24,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:59:24,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:59:24,391 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:59:24,391 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:59:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-13 23:59:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 23:59:24,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:24,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:24,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:24,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1656037931, now seen corresponding path program 1 times [2020-10-13 23:59:24,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:24,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270256907] [2020-10-13 23:59:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:59:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 23:59:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:59:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:59:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:24,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:59:24,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:24,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:59:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:59:24,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270256907] [2020-10-13 23:59:24,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:24,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:59:24,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353546961] [2020-10-13 23:59:24,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:59:24,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:24,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:59:24,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:59:24,999 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-13 23:59:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:25,104 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2020-10-13 23:59:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:59:25,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-13 23:59:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:25,116 INFO L225 Difference]: With dead ends: 46 [2020-10-13 23:59:25,116 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 23:59:25,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:59:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 23:59:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-13 23:59:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:59:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-13 23:59:25,156 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 14 [2020-10-13 23:59:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:25,157 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-13 23:59:25,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:59:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-13 23:59:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 23:59:25,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:25,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:25,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:59:25,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:25,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:25,160 INFO L82 PathProgramCache]: Analyzing trace with hash -533813011, now seen corresponding path program 1 times [2020-10-13 23:59:25,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:25,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457180160] [2020-10-13 23:59:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:25,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:59:25,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 23:59:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:59:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 23:59:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:25,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:25,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:59:25,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:25,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:25,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:59:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:59:25,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457180160] [2020-10-13 23:59:25,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:25,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:59:25,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224388650] [2020-10-13 23:59:25,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:59:25,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:59:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:25,365 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-10-13 23:59:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:25,471 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-13 23:59:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:59:25,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 23:59:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:25,473 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:59:25,473 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:59:25,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:59:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-10-13 23:59:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:59:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-13 23:59:25,483 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 14 [2020-10-13 23:59:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:25,484 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-13 23:59:25,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:59:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-13 23:59:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 23:59:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:25,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:25,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:59:25,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -414258795, now seen corresponding path program 1 times [2020-10-13 23:59:25,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:25,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127844920] [2020-10-13 23:59:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:26,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:59:26,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:59:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-13 23:59:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:26,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:59:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:26,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:26,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:26,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:26,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 23:59:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:59:26,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127844920] [2020-10-13 23:59:26,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:26,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:59:26,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986623792] [2020-10-13 23:59:26,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:59:26,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:26,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:59:26,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:59:26,421 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2020-10-13 23:59:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:26,528 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2020-10-13 23:59:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:59:26,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-13 23:59:26,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:26,530 INFO L225 Difference]: With dead ends: 56 [2020-10-13 23:59:26,530 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:59:26,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:59:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:59:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-13 23:59:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 23:59:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-13 23:59:26,539 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 22 [2020-10-13 23:59:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:26,539 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-13 23:59:26,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:59:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-13 23:59:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:59:26,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:26,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:26,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:59:26,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1579249427, now seen corresponding path program 2 times [2020-10-13 23:59:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:26,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17986798] [2020-10-13 23:59:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:31,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:59:31,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:59:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:59:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:31,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:59:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:59:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 23:59:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:31,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:59:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:31,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:31,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:59:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:59:31,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17986798] [2020-10-13 23:59:31,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:31,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:59:31,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379930176] [2020-10-13 23:59:31,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:31,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:31,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:31,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:31,663 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-10-13 23:59:31,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:31,873 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-13 23:59:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:59:31,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-13 23:59:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:31,877 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:59:31,878 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 23:59:31,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 23:59:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-13 23:59:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:59:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-13 23:59:31,902 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 30 [2020-10-13 23:59:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:31,903 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-13 23:59:31,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-13 23:59:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:59:31,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:31,907 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:31,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:59:31,907 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1850469483, now seen corresponding path program 3 times [2020-10-13 23:59:31,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:31,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573723301] [2020-10-13 23:59:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:36,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 23:59:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:59:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:59:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:36,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:59:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:59:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:37,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:37,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:37,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:37,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:59:37,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573723301] [2020-10-13 23:59:37,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:37,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:59:37,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267674098] [2020-10-13 23:59:37,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:59:37,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:37,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:59:37,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:59:37,044 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 7 states. [2020-10-13 23:59:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:37,265 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2020-10-13 23:59:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:59:37,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-13 23:59:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:37,267 INFO L225 Difference]: With dead ends: 80 [2020-10-13 23:59:37,267 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:59:37,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:59:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:59:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-13 23:59:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 23:59:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-10-13 23:59:37,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 38 [2020-10-13 23:59:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:37,282 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-10-13 23:59:37,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:59:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-10-13 23:59:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:59:37,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:37,286 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:37,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:59:37,286 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1153615635, now seen corresponding path program 4 times [2020-10-13 23:59:37,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:37,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153159305] [2020-10-13 23:59:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:59:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:59:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:59:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:59:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:59:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:42,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:42,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-13 23:59:42,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153159305] [2020-10-13 23:59:42,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:42,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:59:42,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794491638] [2020-10-13 23:59:42,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:42,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:42,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:42,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:42,403 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 6 states. [2020-10-13 23:59:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:42,515 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2020-10-13 23:59:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:59:42,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-13 23:59:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:42,519 INFO L225 Difference]: With dead ends: 113 [2020-10-13 23:59:42,519 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:59:42,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:59:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-10-13 23:59:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 23:59:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-13 23:59:42,529 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 46 [2020-10-13 23:59:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:42,529 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-13 23:59:42,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-13 23:59:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:59:42,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:42,531 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:42,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:59:42,531 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:42,532 INFO L82 PathProgramCache]: Analyzing trace with hash 304191085, now seen corresponding path program 1 times [2020-10-13 23:59:42,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:42,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437271217] [2020-10-13 23:59:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:59:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 23:59:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:42,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:59:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:59:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:43,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:43,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:43,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:43,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 23:59:43,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437271217] [2020-10-13 23:59:43,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:43,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:59:43,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590859957] [2020-10-13 23:59:43,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:59:43,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:43,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:59:43,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:43,029 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 8 states. [2020-10-13 23:59:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:43,218 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2020-10-13 23:59:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:59:43,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-13 23:59:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:43,220 INFO L225 Difference]: With dead ends: 104 [2020-10-13 23:59:43,220 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 23:59:43,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 23:59:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-10-13 23:59:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:59:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-13 23:59:43,229 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 46 [2020-10-13 23:59:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:43,229 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-13 23:59:43,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:59:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-13 23:59:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:59:43,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:43,231 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:43,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:59:43,232 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:43,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:43,232 INFO L82 PathProgramCache]: Analyzing trace with hash -828408681, now seen corresponding path program 2 times [2020-10-13 23:59:43,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:43,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832368089] [2020-10-13 23:59:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:43,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:43,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 23:59:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-13 23:59:43,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:43,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:59:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:43,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 23:59:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:43,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:43,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:43,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:43,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:59:43,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832368089] [2020-10-13 23:59:43,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:43,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:59:43,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209463616] [2020-10-13 23:59:43,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:59:43,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:43,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:59:43,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:59:43,898 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 9 states. [2020-10-13 23:59:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:44,111 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2020-10-13 23:59:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:59:44,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-13 23:59:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:44,113 INFO L225 Difference]: With dead ends: 118 [2020-10-13 23:59:44,113 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:59:44,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:59:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:59:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-10-13 23:59:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 23:59:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-10-13 23:59:44,121 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 54 [2020-10-13 23:59:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:44,122 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-10-13 23:59:44,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:59:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-10-13 23:59:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 23:59:44,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:44,124 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:44,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:59:44,124 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash 893310253, now seen corresponding path program 3 times [2020-10-13 23:59:44,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:44,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345593755] [2020-10-13 23:59:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:59:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:59:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:44,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:44,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:44,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:44,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-13 23:59:44,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345593755] [2020-10-13 23:59:44,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:44,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:59:44,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909549786] [2020-10-13 23:59:44,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:59:44,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:44,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:59:44,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:59:44,789 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 10 states. [2020-10-13 23:59:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:45,086 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-10-13 23:59:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:59:45,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-13 23:59:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:45,089 INFO L225 Difference]: With dead ends: 132 [2020-10-13 23:59:45,089 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 23:59:45,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:59:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 23:59:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2020-10-13 23:59:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:59:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2020-10-13 23:59:45,108 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 62 [2020-10-13 23:59:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:45,112 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2020-10-13 23:59:45,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:59:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2020-10-13 23:59:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:59:45,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:45,116 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:45,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:59:45,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:45,118 INFO L82 PathProgramCache]: Analyzing trace with hash -615935017, now seen corresponding path program 4 times [2020-10-13 23:59:45,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:45,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502411431] [2020-10-13 23:59:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:59:45,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-13 23:59:45,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:59:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 23:59:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 23:59:45,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502411431] [2020-10-13 23:59:45,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:45,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:59:45,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107896410] [2020-10-13 23:59:45,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:59:45,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:59:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:59:45,969 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand 11 states. [2020-10-13 23:59:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:46,222 INFO L93 Difference]: Finished difference Result 146 states and 178 transitions. [2020-10-13 23:59:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:59:46,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 23:59:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:46,224 INFO L225 Difference]: With dead ends: 146 [2020-10-13 23:59:46,224 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 23:59:46,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:59:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 23:59:46,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-10-13 23:59:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 23:59:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2020-10-13 23:59:46,239 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 70 [2020-10-13 23:59:46,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:46,239 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2020-10-13 23:59:46,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:59:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2020-10-13 23:59:46,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:59:46,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:46,240 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:46,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:59:46,241 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1889092589, now seen corresponding path program 5 times [2020-10-13 23:59:46,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:46,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712163320] [2020-10-13 23:59:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:59:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-13 23:59:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:59:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 23:59:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:59:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:47,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 23:59:47,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712163320] [2020-10-13 23:59:47,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:47,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:59:47,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379546409] [2020-10-13 23:59:47,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:59:47,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:47,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:59:47,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:59:47,392 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand 12 states. [2020-10-13 23:59:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:47,595 INFO L93 Difference]: Finished difference Result 160 states and 195 transitions. [2020-10-13 23:59:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:59:47,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-10-13 23:59:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:47,597 INFO L225 Difference]: With dead ends: 160 [2020-10-13 23:59:47,597 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 23:59:47,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:59:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 23:59:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-13 23:59:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 23:59:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2020-10-13 23:59:47,612 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 78 [2020-10-13 23:59:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:47,612 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2020-10-13 23:59:47,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:59:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2020-10-13 23:59:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:59:47,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:47,614 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:47,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:59:47,614 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1861453033, now seen corresponding path program 6 times [2020-10-13 23:59:47,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:47,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050353281] [2020-10-13 23:59:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:49,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:59:49,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-13 23:59:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:49,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:59:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:49,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:49,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 23:59:49,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050353281] [2020-10-13 23:59:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:49,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:59:49,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231466034] [2020-10-13 23:59:49,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:59:49,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:59:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:59:49,834 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 13 states. [2020-10-13 23:59:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:50,110 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2020-10-13 23:59:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:59:50,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-13 23:59:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:50,112 INFO L225 Difference]: With dead ends: 174 [2020-10-13 23:59:50,112 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 23:59:50,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:59:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 23:59:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2020-10-13 23:59:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 23:59:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2020-10-13 23:59:50,120 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 86 [2020-10-13 23:59:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:50,121 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2020-10-13 23:59:50,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:59:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2020-10-13 23:59:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:59:50,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:50,126 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:50,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:59:50,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1223892307, now seen corresponding path program 7 times [2020-10-13 23:59:50,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:50,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173408671] [2020-10-13 23:59:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:59:51,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1565 [2020-10-13 23:59:51,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 23:59:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:51,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:51,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:51,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:51,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:51,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-13 23:59:51,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173408671] [2020-10-13 23:59:51,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:51,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:59:51,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468228804] [2020-10-13 23:59:51,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:59:51,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:59:51,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:59:51,870 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand 14 states. [2020-10-13 23:59:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:52,139 INFO L93 Difference]: Finished difference Result 188 states and 229 transitions. [2020-10-13 23:59:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:59:52,139 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-13 23:59:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:52,140 INFO L225 Difference]: With dead ends: 188 [2020-10-13 23:59:52,140 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 23:59:52,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:59:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 23:59:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2020-10-13 23:59:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 23:59:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 174 transitions. [2020-10-13 23:59:52,149 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 174 transitions. Word has length 94 [2020-10-13 23:59:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:52,149 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 174 transitions. [2020-10-13 23:59:52,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:59:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 174 transitions. [2020-10-13 23:59:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:59:52,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:52,152 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:52,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:59:52,153 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash -141807017, now seen corresponding path program 8 times [2020-10-13 23:59:52,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:52,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318236458] [2020-10-13 23:59:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:53,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:53,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:59:53,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-13 23:59:53,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:53,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:59:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:53,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 23:59:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:54,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:54,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:54,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:59:54,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318236458] [2020-10-13 23:59:54,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:54,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:59:54,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307607582] [2020-10-13 23:59:54,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:59:54,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:54,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:59:54,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:59:54,123 INFO L87 Difference]: Start difference. First operand 139 states and 174 transitions. Second operand 15 states. [2020-10-13 23:59:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:54,396 INFO L93 Difference]: Finished difference Result 202 states and 246 transitions. [2020-10-13 23:59:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:59:54,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 102 [2020-10-13 23:59:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:54,399 INFO L225 Difference]: With dead ends: 202 [2020-10-13 23:59:54,399 INFO L226 Difference]: Without dead ends: 158 [2020-10-13 23:59:54,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:59:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-13 23:59:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2020-10-13 23:59:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 23:59:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2020-10-13 23:59:54,409 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 102 [2020-10-13 23:59:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:54,409 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2020-10-13 23:59:54,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:59:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2020-10-13 23:59:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:59:54,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:54,411 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:54,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:59:54,411 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1718989165, now seen corresponding path program 9 times [2020-10-13 23:59:54,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:54,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368048444] [2020-10-13 23:59:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:58,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:58,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:59:58,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:59:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3586 [2020-10-13 23:59:58,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:58,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:59:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:59:58,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:58,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:58,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:58,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:58,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 23:59:58,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368048444] [2020-10-13 23:59:58,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:58,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:59:58,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307563893] [2020-10-13 23:59:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:59:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:59:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:59:58,233 INFO L87 Difference]: Start difference. First operand 150 states and 188 transitions. Second operand 16 states. [2020-10-13 23:59:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:58,616 INFO L93 Difference]: Finished difference Result 216 states and 263 transitions. [2020-10-13 23:59:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:59:58,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 110 [2020-10-13 23:59:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:58,618 INFO L225 Difference]: With dead ends: 216 [2020-10-13 23:59:58,618 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 23:59:58,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:59:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 23:59:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2020-10-13 23:59:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 23:59:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 202 transitions. [2020-10-13 23:59:58,635 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 202 transitions. Word has length 110 [2020-10-13 23:59:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:58,635 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 202 transitions. [2020-10-13 23:59:58,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:59:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 202 transitions. [2020-10-13 23:59:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 23:59:58,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:58,640 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:58,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:59:58,641 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -882067049, now seen corresponding path program 10 times [2020-10-13 23:59:58,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:58,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555670936] [2020-10-13 23:59:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:00,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:00:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:00:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:00,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-14 00:00:00,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555670936] [2020-10-14 00:00:00,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:00,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:00:00,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394295728] [2020-10-14 00:00:00,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:00:00,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:00,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:00:00,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:00,857 INFO L87 Difference]: Start difference. First operand 161 states and 202 transitions. Second operand 17 states. [2020-10-14 00:00:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:01,172 INFO L93 Difference]: Finished difference Result 230 states and 280 transitions. [2020-10-14 00:00:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:01,173 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 118 [2020-10-14 00:00:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:01,174 INFO L225 Difference]: With dead ends: 230 [2020-10-14 00:00:01,174 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 00:00:01,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 00:00:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-14 00:00:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 00:00:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 216 transitions. [2020-10-14 00:00:01,186 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 216 transitions. Word has length 118 [2020-10-14 00:00:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:01,186 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 216 transitions. [2020-10-14 00:00:01,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:00:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 216 transitions. [2020-10-14 00:00:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:00:01,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:01,189 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:01,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:00:01,189 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:01,189 INFO L82 PathProgramCache]: Analyzing trace with hash 128954413, now seen corresponding path program 11 times [2020-10-14 00:00:01,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:01,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291344257] [2020-10-14 00:00:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:03,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:00:03,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:00:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:03,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:03,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-14 00:00:03,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291344257] [2020-10-14 00:00:03,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:03,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:00:03,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505001159] [2020-10-14 00:00:03,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:00:03,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:00:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:00:03,462 INFO L87 Difference]: Start difference. First operand 172 states and 216 transitions. Second operand 18 states. [2020-10-14 00:00:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:03,787 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-10-14 00:00:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:00:03,788 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 126 [2020-10-14 00:00:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:03,790 INFO L225 Difference]: With dead ends: 244 [2020-10-14 00:00:03,790 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 00:00:03,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:00:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 00:00:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-10-14 00:00:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 00:00:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 230 transitions. [2020-10-14 00:00:03,798 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 230 transitions. Word has length 126 [2020-10-14 00:00:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:03,798 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 230 transitions. [2020-10-14 00:00:03,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:00:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 230 transitions. [2020-10-14 00:00:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 00:00:03,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:03,800 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:03,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:00:03,800 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1101917993, now seen corresponding path program 12 times [2020-10-14 00:00:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:03,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329130055] [2020-10-14 00:00:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:06,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:06,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 00:00:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2222 [2020-10-14 00:00:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:06,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:00:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 00:00:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-14 00:00:06,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329130055] [2020-10-14 00:00:06,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:06,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:00:06,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586641787] [2020-10-14 00:00:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:00:06,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:00:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:00:06,259 INFO L87 Difference]: Start difference. First operand 183 states and 230 transitions. Second operand 19 states. [2020-10-14 00:00:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:06,632 INFO L93 Difference]: Finished difference Result 258 states and 314 transitions. [2020-10-14 00:00:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:00:06,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2020-10-14 00:00:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:06,634 INFO L225 Difference]: With dead ends: 258 [2020-10-14 00:00:06,634 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 00:00:06,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:00:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 00:00:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-10-14 00:00:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 00:00:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 244 transitions. [2020-10-14 00:00:06,650 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 244 transitions. Word has length 134 [2020-10-14 00:00:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:06,651 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 244 transitions. [2020-10-14 00:00:06,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:00:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 244 transitions. [2020-10-14 00:00:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 00:00:06,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:06,653 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:06,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:00:06,653 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash 244768493, now seen corresponding path program 13 times [2020-10-14 00:00:06,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:06,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206868157] [2020-10-14 00:00:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:09,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2601 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:00:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 00:00:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:09,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-14 00:00:09,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206868157] [2020-10-14 00:00:09,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:09,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 00:00:09,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937706810] [2020-10-14 00:00:09,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 00:00:09,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 00:00:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:00:09,507 INFO L87 Difference]: Start difference. First operand 194 states and 244 transitions. Second operand 20 states. [2020-10-14 00:00:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:09,891 INFO L93 Difference]: Finished difference Result 272 states and 331 transitions. [2020-10-14 00:00:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:00:09,892 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 142 [2020-10-14 00:00:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:09,894 INFO L225 Difference]: With dead ends: 272 [2020-10-14 00:00:09,895 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 00:00:09,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:00:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 00:00:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 205. [2020-10-14 00:00:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-14 00:00:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 258 transitions. [2020-10-14 00:00:09,904 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 258 transitions. Word has length 142 [2020-10-14 00:00:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:09,905 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 258 transitions. [2020-10-14 00:00:09,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 00:00:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 258 transitions. [2020-10-14 00:00:09,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 00:00:09,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:09,907 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:09,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:00:09,907 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1226819561, now seen corresponding path program 14 times [2020-10-14 00:00:09,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:09,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060672091] [2020-10-14 00:00:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3336 [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:00:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 00:00:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:13,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:13,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-14 00:00:13,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060672091] [2020-10-14 00:00:13,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:13,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:00:13,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116926160] [2020-10-14 00:00:13,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:00:13,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:13,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:00:13,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:00:13,532 INFO L87 Difference]: Start difference. First operand 205 states and 258 transitions. Second operand 21 states. [2020-10-14 00:00:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:13,903 INFO L93 Difference]: Finished difference Result 286 states and 348 transitions. [2020-10-14 00:00:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:00:13,903 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2020-10-14 00:00:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:13,905 INFO L225 Difference]: With dead ends: 286 [2020-10-14 00:00:13,906 INFO L226 Difference]: Without dead ends: 224 [2020-10-14 00:00:13,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:00:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-14 00:00:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2020-10-14 00:00:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 00:00:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 272 transitions. [2020-10-14 00:00:13,916 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 272 transitions. Word has length 150 [2020-10-14 00:00:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:13,916 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 272 transitions. [2020-10-14 00:00:13,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:00:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 272 transitions. [2020-10-14 00:00:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 00:00:13,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:13,918 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:13,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:00:13,919 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:13,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:13,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1710801491, now seen corresponding path program 15 times [2020-10-14 00:00:13,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:13,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925978043] [2020-10-14 00:00:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 00:00:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3637 [2020-10-14 00:00:17,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:17,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:00:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:00:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:17,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:17,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:17,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:17,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-14 00:00:17,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925978043] [2020-10-14 00:00:17,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:17,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:00:17,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182986413] [2020-10-14 00:00:17,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:00:17,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:00:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:00:17,875 INFO L87 Difference]: Start difference. First operand 216 states and 272 transitions. Second operand 22 states. [2020-10-14 00:00:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:18,310 INFO L93 Difference]: Finished difference Result 300 states and 365 transitions. [2020-10-14 00:00:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:00:18,310 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 158 [2020-10-14 00:00:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:18,312 INFO L225 Difference]: With dead ends: 300 [2020-10-14 00:00:18,313 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 00:00:18,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:00:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 00:00:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2020-10-14 00:00:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 00:00:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 286 transitions. [2020-10-14 00:00:18,323 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 286 transitions. Word has length 158 [2020-10-14 00:00:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:18,323 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 286 transitions. [2020-10-14 00:00:18,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:00:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 286 transitions. [2020-10-14 00:00:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:00:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:18,325 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:18,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:00:18,326 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:18,326 INFO L82 PathProgramCache]: Analyzing trace with hash 280702807, now seen corresponding path program 16 times [2020-10-14 00:00:18,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:18,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482621295] [2020-10-14 00:00:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 00:00:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4177 [2020-10-14 00:00:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 00:00:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:22,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-14 00:00:22,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482621295] [2020-10-14 00:00:22,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:22,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:00:22,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788986890] [2020-10-14 00:00:22,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:00:22,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:22,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:00:22,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:00:22,825 INFO L87 Difference]: Start difference. First operand 227 states and 286 transitions. Second operand 23 states. [2020-10-14 00:00:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:23,309 INFO L93 Difference]: Finished difference Result 314 states and 382 transitions. [2020-10-14 00:00:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:00:23,312 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 166 [2020-10-14 00:00:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:23,313 INFO L225 Difference]: With dead ends: 314 [2020-10-14 00:00:23,313 INFO L226 Difference]: Without dead ends: 246 [2020-10-14 00:00:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:00:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-14 00:00:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2020-10-14 00:00:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-14 00:00:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 300 transitions. [2020-10-14 00:00:23,326 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 300 transitions. Word has length 166 [2020-10-14 00:00:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:23,326 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 300 transitions. [2020-10-14 00:00:23,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:00:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 300 transitions. [2020-10-14 00:00:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 00:00:23,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:23,330 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:23,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:00:23,331 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash 870108269, now seen corresponding path program 17 times [2020-10-14 00:00:23,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:23,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255283155] [2020-10-14 00:00:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:28,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:28,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 00:00:28,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:28,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:00:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 00:00:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:28,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:28,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-14 00:00:28,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255283155] [2020-10-14 00:00:28,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:28,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:00:28,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753105111] [2020-10-14 00:00:28,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:00:28,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:28,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:00:28,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:00:28,696 INFO L87 Difference]: Start difference. First operand 238 states and 300 transitions. Second operand 24 states. [2020-10-14 00:00:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:29,160 INFO L93 Difference]: Finished difference Result 328 states and 399 transitions. [2020-10-14 00:00:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:00:29,161 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 174 [2020-10-14 00:00:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:29,163 INFO L225 Difference]: With dead ends: 328 [2020-10-14 00:00:29,163 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 00:00:29,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:00:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 00:00:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2020-10-14 00:00:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-14 00:00:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 314 transitions. [2020-10-14 00:00:29,173 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 314 transitions. Word has length 174 [2020-10-14 00:00:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:29,174 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 314 transitions. [2020-10-14 00:00:29,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:00:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 314 transitions. [2020-10-14 00:00:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 00:00:29,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:29,176 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:29,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:00:29,176 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:29,176 INFO L82 PathProgramCache]: Analyzing trace with hash -595134825, now seen corresponding path program 18 times [2020-10-14 00:00:29,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:29,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367932794] [2020-10-14 00:00:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:34,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 00:00:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 00:00:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:34,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:34,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:34,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-14 00:00:34,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367932794] [2020-10-14 00:00:34,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:34,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:00:34,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049721630] [2020-10-14 00:00:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:00:34,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:34,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:00:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:00:34,551 INFO L87 Difference]: Start difference. First operand 249 states and 314 transitions. Second operand 25 states. [2020-10-14 00:00:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:35,025 INFO L93 Difference]: Finished difference Result 342 states and 416 transitions. [2020-10-14 00:00:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:00:35,026 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 182 [2020-10-14 00:00:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:35,028 INFO L225 Difference]: With dead ends: 342 [2020-10-14 00:00:35,028 INFO L226 Difference]: Without dead ends: 268 [2020-10-14 00:00:35,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:00:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-14 00:00:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 260. [2020-10-14 00:00:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-14 00:00:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 328 transitions. [2020-10-14 00:00:35,038 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 328 transitions. Word has length 182 [2020-10-14 00:00:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:35,039 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 328 transitions. [2020-10-14 00:00:35,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:00:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 328 transitions. [2020-10-14 00:00:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 00:00:35,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:35,040 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:35,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:00:35,041 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1863087315, now seen corresponding path program 19 times [2020-10-14 00:00:35,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:35,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374250650] [2020-10-14 00:00:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 00:00:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 00:00:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:40,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-14 00:00:40,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374250650] [2020-10-14 00:00:40,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:40,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:00:40,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597813188] [2020-10-14 00:00:40,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:00:40,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:40,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:00:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:00:40,443 INFO L87 Difference]: Start difference. First operand 260 states and 328 transitions. Second operand 26 states. [2020-10-14 00:00:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:40,986 INFO L93 Difference]: Finished difference Result 356 states and 433 transitions. [2020-10-14 00:00:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:00:40,987 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 190 [2020-10-14 00:00:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:40,989 INFO L225 Difference]: With dead ends: 356 [2020-10-14 00:00:40,989 INFO L226 Difference]: Without dead ends: 279 [2020-10-14 00:00:40,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:00:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-14 00:00:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 271. [2020-10-14 00:00:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-14 00:00:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 342 transitions. [2020-10-14 00:00:40,999 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 342 transitions. Word has length 190 [2020-10-14 00:00:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:40,999 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 342 transitions. [2020-10-14 00:00:40,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:00:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 342 transitions. [2020-10-14 00:00:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 00:00:41,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:41,001 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:41,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:00:41,002 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash 535268823, now seen corresponding path program 20 times [2020-10-14 00:00:41,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:41,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329267312] [2020-10-14 00:00:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 00:00:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 00:00:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:46,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:46,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:46,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:46,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:46,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:46,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:46,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-14 00:00:46,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329267312] [2020-10-14 00:00:46,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:46,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:00:46,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761086245] [2020-10-14 00:00:46,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:00:46,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:00:46,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:00:46,586 INFO L87 Difference]: Start difference. First operand 271 states and 342 transitions. Second operand 27 states. [2020-10-14 00:00:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:47,129 INFO L93 Difference]: Finished difference Result 370 states and 450 transitions. [2020-10-14 00:00:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:00:47,130 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 198 [2020-10-14 00:00:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:47,133 INFO L225 Difference]: With dead ends: 370 [2020-10-14 00:00:47,133 INFO L226 Difference]: Without dead ends: 290 [2020-10-14 00:00:47,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:00:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-14 00:00:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 282. [2020-10-14 00:00:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-14 00:00:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 356 transitions. [2020-10-14 00:00:47,144 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 356 transitions. Word has length 198 [2020-10-14 00:00:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:47,144 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 356 transitions. [2020-10-14 00:00:47,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:00:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 356 transitions. [2020-10-14 00:00:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 00:00:47,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:47,146 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:47,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:00:47,146 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:47,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1361541613, now seen corresponding path program 21 times [2020-10-14 00:00:47,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:47,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107241785] [2020-10-14 00:00:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:00:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:00:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:52,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:52,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-14 00:00:52,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107241785] [2020-10-14 00:00:52,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:52,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:00:52,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60662458] [2020-10-14 00:00:52,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:00:52,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:52,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:00:52,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:00:52,634 INFO L87 Difference]: Start difference. First operand 282 states and 356 transitions. Second operand 28 states. [2020-10-14 00:00:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:53,173 INFO L93 Difference]: Finished difference Result 384 states and 467 transitions. [2020-10-14 00:00:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 00:00:53,174 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 206 [2020-10-14 00:00:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:53,176 INFO L225 Difference]: With dead ends: 384 [2020-10-14 00:00:53,176 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 00:00:53,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:00:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 00:00:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 293. [2020-10-14 00:00:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-14 00:00:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 370 transitions. [2020-10-14 00:00:53,187 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 370 transitions. Word has length 206 [2020-10-14 00:00:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:53,187 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 370 transitions. [2020-10-14 00:00:53,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:00:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 370 transitions. [2020-10-14 00:00:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 00:00:53,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:53,189 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:53,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:00:53,191 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash 360772887, now seen corresponding path program 22 times [2020-10-14 00:00:53,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:53,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643868353] [2020-10-14 00:00:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:58,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 00:00:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 00:00:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:58,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-14 00:00:58,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643868353] [2020-10-14 00:00:58,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:58,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 00:00:58,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008822079] [2020-10-14 00:00:58,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 00:00:58,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:58,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 00:00:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:00:58,713 INFO L87 Difference]: Start difference. First operand 293 states and 370 transitions. Second operand 29 states. [2020-10-14 00:00:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:59,340 INFO L93 Difference]: Finished difference Result 398 states and 484 transitions. [2020-10-14 00:00:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:00:59,340 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 214 [2020-10-14 00:00:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:59,343 INFO L225 Difference]: With dead ends: 398 [2020-10-14 00:00:59,343 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 00:00:59,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:00:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 00:00:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 304. [2020-10-14 00:00:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-14 00:00:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 384 transitions. [2020-10-14 00:00:59,355 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 384 transitions. Word has length 214 [2020-10-14 00:00:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:59,355 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 384 transitions. [2020-10-14 00:00:59,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 00:00:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 384 transitions. [2020-10-14 00:00:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 00:00:59,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:59,357 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:59,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:00:59,357 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:59,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1084974931, now seen corresponding path program 23 times [2020-10-14 00:00:59,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:59,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723118164] [2020-10-14 00:00:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:04,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:04,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 00:01:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 00:01:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:04,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:04,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:04,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:04,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:04,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:04,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:04,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-14 00:01:04,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723118164] [2020-10-14 00:01:04,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:04,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 00:01:04,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665287796] [2020-10-14 00:01:04,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 00:01:04,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:04,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 00:01:04,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:01:04,921 INFO L87 Difference]: Start difference. First operand 304 states and 384 transitions. Second operand 30 states. [2020-10-14 00:01:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:05,546 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-10-14 00:01:05,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:01:05,547 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 222 [2020-10-14 00:01:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:05,549 INFO L225 Difference]: With dead ends: 412 [2020-10-14 00:01:05,550 INFO L226 Difference]: Without dead ends: 323 [2020-10-14 00:01:05,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:01:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-14 00:01:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 315. [2020-10-14 00:01:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-14 00:01:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2020-10-14 00:01:05,565 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 222 [2020-10-14 00:01:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:05,566 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2020-10-14 00:01:05,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 00:01:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2020-10-14 00:01:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 00:01:05,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:05,569 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:05,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:01:05,570 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:05,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1828138071, now seen corresponding path program 24 times [2020-10-14 00:01:05,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:05,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551560220] [2020-10-14 00:01:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:10,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:10,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 00:01:10,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 00:01:10,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:11,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-14 00:01:11,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551560220] [2020-10-14 00:01:11,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:11,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 00:01:11,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779430215] [2020-10-14 00:01:11,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 00:01:11,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:11,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 00:01:11,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:01:11,189 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand 31 states. [2020-10-14 00:01:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:11,929 INFO L93 Difference]: Finished difference Result 426 states and 518 transitions. [2020-10-14 00:01:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 00:01:11,930 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 230 [2020-10-14 00:01:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:11,939 INFO L225 Difference]: With dead ends: 426 [2020-10-14 00:01:11,940 INFO L226 Difference]: Without dead ends: 334 [2020-10-14 00:01:11,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:01:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-14 00:01:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 326. [2020-10-14 00:01:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-14 00:01:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 412 transitions. [2020-10-14 00:01:11,969 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 412 transitions. Word has length 230 [2020-10-14 00:01:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:11,970 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 412 transitions. [2020-10-14 00:01:11,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 00:01:11,970 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 412 transitions. [2020-10-14 00:01:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:01:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:11,973 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:11,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:01:11,974 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1856575635, now seen corresponding path program 25 times [2020-10-14 00:01:11,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:11,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243115369] [2020-10-14 00:01:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 00:01:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:17,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:17,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:17,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3108 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-14 00:01:17,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243115369] [2020-10-14 00:01:17,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:17,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 00:01:17,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926001650] [2020-10-14 00:01:17,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 00:01:17,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 00:01:17,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:01:17,591 INFO L87 Difference]: Start difference. First operand 326 states and 412 transitions. Second operand 32 states. [2020-10-14 00:01:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:18,272 INFO L93 Difference]: Finished difference Result 440 states and 535 transitions. [2020-10-14 00:01:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 00:01:18,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 238 [2020-10-14 00:01:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:18,275 INFO L225 Difference]: With dead ends: 440 [2020-10-14 00:01:18,276 INFO L226 Difference]: Without dead ends: 345 [2020-10-14 00:01:18,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:01:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-14 00:01:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2020-10-14 00:01:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-14 00:01:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 426 transitions. [2020-10-14 00:01:18,287 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 426 transitions. Word has length 238 [2020-10-14 00:01:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:18,287 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 426 transitions. [2020-10-14 00:01:18,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 00:01:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 426 transitions. [2020-10-14 00:01:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 00:01:18,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:18,289 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:18,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:01:18,290 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1964100713, now seen corresponding path program 26 times [2020-10-14 00:01:18,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:18,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305576780] [2020-10-14 00:01:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 00:01:23,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3335 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-14 00:01:23,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305576780] [2020-10-14 00:01:23,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:23,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 00:01:23,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756887950] [2020-10-14 00:01:23,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 00:01:23,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:23,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 00:01:23,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:01:23,930 INFO L87 Difference]: Start difference. First operand 337 states and 426 transitions. Second operand 33 states. [2020-10-14 00:01:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:24,648 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2020-10-14 00:01:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:01:24,649 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 246 [2020-10-14 00:01:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:24,651 INFO L225 Difference]: With dead ends: 454 [2020-10-14 00:01:24,651 INFO L226 Difference]: Without dead ends: 356 [2020-10-14 00:01:24,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:01:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-14 00:01:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2020-10-14 00:01:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-14 00:01:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 440 transitions. [2020-10-14 00:01:24,666 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 440 transitions. Word has length 246 [2020-10-14 00:01:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:24,667 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 440 transitions. [2020-10-14 00:01:24,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 00:01:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 440 transitions. [2020-10-14 00:01:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 00:01:24,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:24,669 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:24,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:01:24,670 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:24,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1475713491, now seen corresponding path program 27 times [2020-10-14 00:01:24,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:24,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834037234] [2020-10-14 00:01:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:29,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:29,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 00:01:29,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 00:01:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:30,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:30,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:30,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:30,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:30,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:30,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:30,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:30,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:30,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:30,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:30,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-14 00:01:30,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834037234] [2020-10-14 00:01:30,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:30,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 00:01:30,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259239578] [2020-10-14 00:01:30,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 00:01:30,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:30,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 00:01:30,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:01:30,350 INFO L87 Difference]: Start difference. First operand 348 states and 440 transitions. Second operand 34 states. [2020-10-14 00:01:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:31,133 INFO L93 Difference]: Finished difference Result 468 states and 569 transitions. [2020-10-14 00:01:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 00:01:31,134 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 254 [2020-10-14 00:01:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:31,137 INFO L225 Difference]: With dead ends: 468 [2020-10-14 00:01:31,137 INFO L226 Difference]: Without dead ends: 367 [2020-10-14 00:01:31,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:01:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-14 00:01:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 359. [2020-10-14 00:01:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-14 00:01:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 454 transitions. [2020-10-14 00:01:31,152 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 454 transitions. Word has length 254 [2020-10-14 00:01:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:31,153 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 454 transitions. [2020-10-14 00:01:31,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 00:01:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 454 transitions. [2020-10-14 00:01:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 00:01:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:31,157 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:31,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:01:31,158 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -922088745, now seen corresponding path program 28 times [2020-10-14 00:01:31,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:31,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777536462] [2020-10-14 00:01:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 00:01:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:36,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-14 00:01:36,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777536462] [2020-10-14 00:01:36,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:36,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 00:01:36,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546670960] [2020-10-14 00:01:36,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 00:01:36,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 00:01:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:01:36,878 INFO L87 Difference]: Start difference. First operand 359 states and 454 transitions. Second operand 35 states. [2020-10-14 00:01:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:37,649 INFO L93 Difference]: Finished difference Result 482 states and 586 transitions. [2020-10-14 00:01:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 00:01:37,649 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 262 [2020-10-14 00:01:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:37,652 INFO L225 Difference]: With dead ends: 482 [2020-10-14 00:01:37,652 INFO L226 Difference]: Without dead ends: 378 [2020-10-14 00:01:37,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:01:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-14 00:01:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2020-10-14 00:01:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-14 00:01:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 468 transitions. [2020-10-14 00:01:37,663 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 468 transitions. Word has length 262 [2020-10-14 00:01:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:37,664 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 468 transitions. [2020-10-14 00:01:37,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 00:01:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 468 transitions. [2020-10-14 00:01:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 00:01:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:37,666 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:37,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:01:37,666 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash -817163027, now seen corresponding path program 29 times [2020-10-14 00:01:37,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:37,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47513691] [2020-10-14 00:01:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:42,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:42,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 00:01:42,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 00:01:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:43,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4064 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-14 00:01:43,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47513691] [2020-10-14 00:01:43,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:43,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 00:01:43,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030620955] [2020-10-14 00:01:43,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 00:01:43,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:43,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 00:01:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:01:43,427 INFO L87 Difference]: Start difference. First operand 370 states and 468 transitions. Second operand 36 states. [2020-10-14 00:01:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:44,132 INFO L93 Difference]: Finished difference Result 496 states and 603 transitions. [2020-10-14 00:01:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:01:44,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 270 [2020-10-14 00:01:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:44,134 INFO L225 Difference]: With dead ends: 496 [2020-10-14 00:01:44,134 INFO L226 Difference]: Without dead ends: 389 [2020-10-14 00:01:44,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:01:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-14 00:01:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 381. [2020-10-14 00:01:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-14 00:01:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 482 transitions. [2020-10-14 00:01:44,146 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 482 transitions. Word has length 270 [2020-10-14 00:01:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:44,147 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 482 transitions. [2020-10-14 00:01:44,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 00:01:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 482 transitions. [2020-10-14 00:01:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 00:01:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:44,149 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:44,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:01:44,149 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1242648041, now seen corresponding path program 30 times [2020-10-14 00:01:44,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:44,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527715138] [2020-10-14 00:01:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 00:01:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:49,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4323 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-14 00:01:49,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527715138] [2020-10-14 00:01:49,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:49,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 00:01:49,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450296553] [2020-10-14 00:01:49,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 00:01:49,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:49,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 00:01:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:01:49,952 INFO L87 Difference]: Start difference. First operand 381 states and 482 transitions. Second operand 37 states. [2020-10-14 00:01:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:50,763 INFO L93 Difference]: Finished difference Result 510 states and 620 transitions. [2020-10-14 00:01:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 00:01:50,763 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 278 [2020-10-14 00:01:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:50,766 INFO L225 Difference]: With dead ends: 510 [2020-10-14 00:01:50,766 INFO L226 Difference]: Without dead ends: 400 [2020-10-14 00:01:50,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:01:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-14 00:01:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 392. [2020-10-14 00:01:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-14 00:01:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 496 transitions. [2020-10-14 00:01:50,776 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 496 transitions. Word has length 278 [2020-10-14 00:01:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:50,777 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 496 transitions. [2020-10-14 00:01:50,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 00:01:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 496 transitions. [2020-10-14 00:01:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-14 00:01:50,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:50,779 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:50,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:01:50,779 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:50,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2113205165, now seen corresponding path program 31 times [2020-10-14 00:01:50,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:50,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162814493] [2020-10-14 00:01:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:55,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 00:01:55,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:01:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 00:01:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:56,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:56,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:56,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:01:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:01:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4590 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-14 00:01:56,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162814493] [2020-10-14 00:01:56,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:56,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 00:01:56,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539933970] [2020-10-14 00:01:56,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 00:01:56,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 00:01:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 00:01:56,627 INFO L87 Difference]: Start difference. First operand 392 states and 496 transitions. Second operand 38 states. [2020-10-14 00:01:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:57,394 INFO L93 Difference]: Finished difference Result 524 states and 637 transitions. [2020-10-14 00:01:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:01:57,395 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 286 [2020-10-14 00:01:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:57,398 INFO L225 Difference]: With dead ends: 524 [2020-10-14 00:01:57,398 INFO L226 Difference]: Without dead ends: 411 [2020-10-14 00:01:57,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 00:01:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-14 00:01:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 403. [2020-10-14 00:01:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-14 00:01:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 510 transitions. [2020-10-14 00:01:57,413 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 510 transitions. Word has length 286 [2020-10-14 00:01:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:57,413 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 510 transitions. [2020-10-14 00:01:57,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 00:01:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 510 transitions. [2020-10-14 00:01:57,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 00:01:57,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:57,416 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:57,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:01:57,416 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:57,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1430268247, now seen corresponding path program 32 times [2020-10-14 00:01:57,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:57,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428984234] [2020-10-14 00:01:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:02,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:02,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 00:02:02,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-14 00:02:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:03,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-14 00:02:03,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428984234] [2020-10-14 00:02:03,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 00:02:03,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735286601] [2020-10-14 00:02:03,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 00:02:03,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:03,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 00:02:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:02:03,303 INFO L87 Difference]: Start difference. First operand 403 states and 510 transitions. Second operand 39 states. [2020-10-14 00:02:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:04,085 INFO L93 Difference]: Finished difference Result 538 states and 654 transitions. [2020-10-14 00:02:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:02:04,085 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 294 [2020-10-14 00:02:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:04,088 INFO L225 Difference]: With dead ends: 538 [2020-10-14 00:02:04,089 INFO L226 Difference]: Without dead ends: 422 [2020-10-14 00:02:04,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:02:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-14 00:02:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2020-10-14 00:02:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-14 00:02:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 524 transitions. [2020-10-14 00:02:04,099 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 524 transitions. Word has length 294 [2020-10-14 00:02:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:04,099 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 524 transitions. [2020-10-14 00:02:04,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 00:02:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 524 transitions. [2020-10-14 00:02:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 00:02:04,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:04,102 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:04,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:02:04,102 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1780219283, now seen corresponding path program 33 times [2020-10-14 00:02:04,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:04,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99398718] [2020-10-14 00:02:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:09,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 00:02:09,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 00:02:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:09,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:09,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:09,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:09,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5148 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-14 00:02:10,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99398718] [2020-10-14 00:02:10,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:10,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 00:02:10,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311969337] [2020-10-14 00:02:10,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 00:02:10,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 00:02:10,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 00:02:10,015 INFO L87 Difference]: Start difference. First operand 414 states and 524 transitions. Second operand 40 states. [2020-10-14 00:02:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:10,948 INFO L93 Difference]: Finished difference Result 552 states and 671 transitions. [2020-10-14 00:02:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 00:02:10,948 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 302 [2020-10-14 00:02:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:10,950 INFO L225 Difference]: With dead ends: 552 [2020-10-14 00:02:10,951 INFO L226 Difference]: Without dead ends: 433 [2020-10-14 00:02:10,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 00:02:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-14 00:02:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 425. [2020-10-14 00:02:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-14 00:02:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 538 transitions. [2020-10-14 00:02:10,961 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 538 transitions. Word has length 302 [2020-10-14 00:02:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:10,961 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 538 transitions. [2020-10-14 00:02:10,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 00:02:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 538 transitions. [2020-10-14 00:02:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-14 00:02:10,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:10,964 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:10,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:02:10,964 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:10,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1604481175, now seen corresponding path program 34 times [2020-10-14 00:02:10,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:10,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492400175] [2020-10-14 00:02:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 00:02:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-14 00:02:16,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492400175] [2020-10-14 00:02:16,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:16,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 00:02:16,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88315393] [2020-10-14 00:02:16,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 00:02:16,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:16,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 00:02:16,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 00:02:16,929 INFO L87 Difference]: Start difference. First operand 425 states and 538 transitions. Second operand 41 states. [2020-10-14 00:02:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:17,872 INFO L93 Difference]: Finished difference Result 566 states and 688 transitions. [2020-10-14 00:02:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:02:17,872 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 310 [2020-10-14 00:02:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:17,875 INFO L225 Difference]: With dead ends: 566 [2020-10-14 00:02:17,875 INFO L226 Difference]: Without dead ends: 444 [2020-10-14 00:02:17,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 00:02:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-14 00:02:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 436. [2020-10-14 00:02:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-14 00:02:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 552 transitions. [2020-10-14 00:02:17,885 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 552 transitions. Word has length 310 [2020-10-14 00:02:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:17,886 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 552 transitions. [2020-10-14 00:02:17,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 00:02:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 552 transitions. [2020-10-14 00:02:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 00:02:17,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:17,888 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:17,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:02:17,889 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 603210029, now seen corresponding path program 35 times [2020-10-14 00:02:17,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:17,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556296679] [2020-10-14 00:02:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:18,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 00:02:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5738 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-14 00:02:23,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556296679] [2020-10-14 00:02:23,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:23,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 00:02:23,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041184189] [2020-10-14 00:02:23,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 00:02:23,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:23,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 00:02:23,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 00:02:23,900 INFO L87 Difference]: Start difference. First operand 436 states and 552 transitions. Second operand 42 states. [2020-10-14 00:02:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:24,907 INFO L93 Difference]: Finished difference Result 580 states and 705 transitions. [2020-10-14 00:02:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 00:02:24,908 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 318 [2020-10-14 00:02:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:24,911 INFO L225 Difference]: With dead ends: 580 [2020-10-14 00:02:24,911 INFO L226 Difference]: Without dead ends: 455 [2020-10-14 00:02:24,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 00:02:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-14 00:02:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 447. [2020-10-14 00:02:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-14 00:02:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 566 transitions. [2020-10-14 00:02:24,925 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 566 transitions. Word has length 318 [2020-10-14 00:02:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:24,925 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 566 transitions. [2020-10-14 00:02:24,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 00:02:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 566 transitions. [2020-10-14 00:02:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-14 00:02:24,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:24,928 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:24,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 00:02:24,928 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2101770281, now seen corresponding path program 36 times [2020-10-14 00:02:24,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:24,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018208100] [2020-10-14 00:02:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:25,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:29,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 00:02:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 00:02:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6045 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-10-14 00:02:30,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018208100] [2020-10-14 00:02:30,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:31,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 00:02:31,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687895745] [2020-10-14 00:02:31,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 00:02:31,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 00:02:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:02:31,002 INFO L87 Difference]: Start difference. First operand 447 states and 566 transitions. Second operand 43 states. [2020-10-14 00:02:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:32,033 INFO L93 Difference]: Finished difference Result 594 states and 722 transitions. [2020-10-14 00:02:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 00:02:32,033 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 326 [2020-10-14 00:02:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:32,035 INFO L225 Difference]: With dead ends: 594 [2020-10-14 00:02:32,036 INFO L226 Difference]: Without dead ends: 466 [2020-10-14 00:02:32,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:02:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-14 00:02:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2020-10-14 00:02:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2020-10-14 00:02:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 580 transitions. [2020-10-14 00:02:32,046 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 580 transitions. Word has length 326 [2020-10-14 00:02:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:32,047 INFO L479 AbstractCegarLoop]: Abstraction has 458 states and 580 transitions. [2020-10-14 00:02:32,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 00:02:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 580 transitions. [2020-10-14 00:02:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 00:02:32,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:32,049 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:32,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 00:02:32,050 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:32,050 INFO L82 PathProgramCache]: Analyzing trace with hash 536981485, now seen corresponding path program 37 times [2020-10-14 00:02:32,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:32,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717930792] [2020-10-14 00:02:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:37,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 00:02:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 00:02:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:38,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:38,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6360 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-14 00:02:38,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717930792] [2020-10-14 00:02:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:38,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 00:02:38,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120544714] [2020-10-14 00:02:38,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 00:02:38,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:38,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 00:02:38,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 00:02:38,187 INFO L87 Difference]: Start difference. First operand 458 states and 580 transitions. Second operand 44 states. [2020-10-14 00:02:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:39,089 INFO L93 Difference]: Finished difference Result 608 states and 739 transitions. [2020-10-14 00:02:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 00:02:39,089 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 334 [2020-10-14 00:02:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:39,092 INFO L225 Difference]: With dead ends: 608 [2020-10-14 00:02:39,092 INFO L226 Difference]: Without dead ends: 477 [2020-10-14 00:02:39,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 00:02:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-14 00:02:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 469. [2020-10-14 00:02:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-14 00:02:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 594 transitions. [2020-10-14 00:02:39,103 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 594 transitions. Word has length 334 [2020-10-14 00:02:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:39,103 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 594 transitions. [2020-10-14 00:02:39,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 00:02:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 594 transitions. [2020-10-14 00:02:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 00:02:39,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:39,106 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:39,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 00:02:39,106 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1591120105, now seen corresponding path program 38 times [2020-10-14 00:02:39,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:39,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479177445] [2020-10-14 00:02:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 00:02:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:45,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6683 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-10-14 00:02:45,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479177445] [2020-10-14 00:02:45,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:45,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 00:02:45,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591479843] [2020-10-14 00:02:45,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 00:02:45,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 00:02:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 00:02:45,293 INFO L87 Difference]: Start difference. First operand 469 states and 594 transitions. Second operand 45 states. [2020-10-14 00:02:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:46,270 INFO L93 Difference]: Finished difference Result 622 states and 756 transitions. [2020-10-14 00:02:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 00:02:46,271 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 342 [2020-10-14 00:02:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:46,273 INFO L225 Difference]: With dead ends: 622 [2020-10-14 00:02:46,274 INFO L226 Difference]: Without dead ends: 488 [2020-10-14 00:02:46,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 00:02:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-14 00:02:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 480. [2020-10-14 00:02:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-14 00:02:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 608 transitions. [2020-10-14 00:02:46,283 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 608 transitions. Word has length 342 [2020-10-14 00:02:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:46,284 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 608 transitions. [2020-10-14 00:02:46,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 00:02:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 608 transitions. [2020-10-14 00:02:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 00:02:46,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:46,287 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:46,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 00:02:46,287 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:46,288 INFO L82 PathProgramCache]: Analyzing trace with hash 753421997, now seen corresponding path program 39 times [2020-10-14 00:02:46,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:46,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053346992] [2020-10-14 00:02:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 00:02:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 00:02:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:52,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:52,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:52,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7014 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-10-14 00:02:52,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053346992] [2020-10-14 00:02:52,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:52,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 00:02:52,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115231033] [2020-10-14 00:02:52,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 00:02:52,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 00:02:52,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:02:52,510 INFO L87 Difference]: Start difference. First operand 480 states and 608 transitions. Second operand 46 states. [2020-10-14 00:02:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:53,635 INFO L93 Difference]: Finished difference Result 636 states and 773 transitions. [2020-10-14 00:02:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 00:02:53,635 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 350 [2020-10-14 00:02:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:53,639 INFO L225 Difference]: With dead ends: 636 [2020-10-14 00:02:53,639 INFO L226 Difference]: Without dead ends: 499 [2020-10-14 00:02:53,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:02:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-14 00:02:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 491. [2020-10-14 00:02:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-14 00:02:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 622 transitions. [2020-10-14 00:02:53,650 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 622 transitions. Word has length 350 [2020-10-14 00:02:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:53,651 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 622 transitions. [2020-10-14 00:02:53,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 00:02:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 622 transitions. [2020-10-14 00:02:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-14 00:02:53,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:53,654 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:53,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 00:02:53,654 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 311830103, now seen corresponding path program 40 times [2020-10-14 00:02:53,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:53,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830187021] [2020-10-14 00:02:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:58,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-14 00:02:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:02:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:02:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:58,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 00:02:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:02:58,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 00:02:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:02:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:02:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7353 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-10-14 00:02:59,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830187021] [2020-10-14 00:02:59,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:59,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 00:02:59,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699284809] [2020-10-14 00:02:59,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 00:02:59,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:59,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 00:02:59,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:02:59,969 INFO L87 Difference]: Start difference. First operand 491 states and 622 transitions. Second operand 47 states. [2020-10-14 00:03:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:01,148 INFO L93 Difference]: Finished difference Result 650 states and 790 transitions. [2020-10-14 00:03:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 00:03:01,149 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 358 [2020-10-14 00:03:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:01,152 INFO L225 Difference]: With dead ends: 650 [2020-10-14 00:03:01,152 INFO L226 Difference]: Without dead ends: 510 [2020-10-14 00:03:01,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:03:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-14 00:03:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 502. [2020-10-14 00:03:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-14 00:03:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 636 transitions. [2020-10-14 00:03:01,162 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 636 transitions. Word has length 358 [2020-10-14 00:03:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:01,163 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 636 transitions. [2020-10-14 00:03:01,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 00:03:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 636 transitions. [2020-10-14 00:03:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-14 00:03:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:01,165 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:01,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 00:03:01,166 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1485053293, now seen corresponding path program 41 times [2020-10-14 00:03:01,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:01,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069219146] [2020-10-14 00:03:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:06,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:06,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 00:03:06,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:03:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 00:03:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7700 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-10-14 00:03:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069219146] [2020-10-14 00:03:07,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:07,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 00:03:07,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922597488] [2020-10-14 00:03:07,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 00:03:07,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:07,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 00:03:07,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 00:03:07,515 INFO L87 Difference]: Start difference. First operand 502 states and 636 transitions. Second operand 48 states. [2020-10-14 00:03:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:08,613 INFO L93 Difference]: Finished difference Result 664 states and 807 transitions. [2020-10-14 00:03:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 00:03:08,614 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 366 [2020-10-14 00:03:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:08,617 INFO L225 Difference]: With dead ends: 664 [2020-10-14 00:03:08,617 INFO L226 Difference]: Without dead ends: 521 [2020-10-14 00:03:08,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 00:03:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-14 00:03:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 513. [2020-10-14 00:03:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-14 00:03:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 650 transitions. [2020-10-14 00:03:08,626 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 650 transitions. Word has length 366 [2020-10-14 00:03:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:08,627 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 650 transitions. [2020-10-14 00:03:08,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 00:03:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 650 transitions. [2020-10-14 00:03:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 00:03:08,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:08,630 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:08,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 00:03:08,630 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash -475812457, now seen corresponding path program 42 times [2020-10-14 00:03:08,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:08,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134205577] [2020-10-14 00:03:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 00:03:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:14,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:03:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:03:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8055 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-10-14 00:03:15,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134205577] [2020-10-14 00:03:15,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:15,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 00:03:15,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543931504] [2020-10-14 00:03:15,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 00:03:15,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 00:03:15,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:03:15,033 INFO L87 Difference]: Start difference. First operand 513 states and 650 transitions. Second operand 49 states. [2020-10-14 00:03:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:16,193 INFO L93 Difference]: Finished difference Result 678 states and 824 transitions. [2020-10-14 00:03:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 00:03:16,194 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 374 [2020-10-14 00:03:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:16,197 INFO L225 Difference]: With dead ends: 678 [2020-10-14 00:03:16,198 INFO L226 Difference]: Without dead ends: 532 [2020-10-14 00:03:16,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:03:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-14 00:03:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 524. [2020-10-14 00:03:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-14 00:03:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 664 transitions. [2020-10-14 00:03:16,208 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 664 transitions. Word has length 374 [2020-10-14 00:03:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:16,208 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 664 transitions. [2020-10-14 00:03:16,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 00:03:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 664 transitions. [2020-10-14 00:03:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-14 00:03:16,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:16,211 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:16,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 00:03:16,211 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -609149907, now seen corresponding path program 43 times [2020-10-14 00:03:16,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:16,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965257464] [2020-10-14 00:03:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking...