/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:55:32,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:55:32,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:55:32,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:55:32,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:55:32,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:55:32,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:55:32,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:55:32,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:55:32,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:55:32,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:55:32,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:55:32,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:55:32,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:55:32,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:55:32,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:55:32,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:55:32,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:55:32,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:55:32,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:55:32,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:55:32,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:55:32,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:55:32,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:55:32,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:55:32,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:55:32,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:55:32,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:55:32,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:55:32,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:55:32,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:55:32,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:55:32,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:55:32,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:55:32,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:55:32,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:55:32,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:55:32,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:55:32,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:55:32,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:55:32,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:55:32,657 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 [2020-10-14 23:55:32,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:55:32,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:55:32,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:55:32,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:55:32,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:55:32,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:55:32,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:55:32,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:55:32,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:55:32,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:55:32,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:55:32,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:55:32,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:55:32,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:55:32,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:55:32,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:55:32,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:55:32,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:55:32,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:55:32,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:55:32,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:55:32,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:55:32,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:55:32,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:55:32,707 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:55:33,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:55:33,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:55:33,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:55:33,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:55:33,032 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:55:33,033 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2020-10-14 23:55:33,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3213f2be5/b834bfad2f514a9580b03b5d8f2d5f90/FLAG50ea38167 [2020-10-14 23:55:33,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:55:33,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_2.i [2020-10-14 23:55:33,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3213f2be5/b834bfad2f514a9580b03b5d8f2d5f90/FLAG50ea38167 [2020-10-14 23:55:33,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3213f2be5/b834bfad2f514a9580b03b5d8f2d5f90 [2020-10-14 23:55:33,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:55:33,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:55:33,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:55:33,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:55:33,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:55:33,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:55:33" (1/1) ... [2020-10-14 23:55:33,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45368341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:33, skipping insertion in model container [2020-10-14 23:55:33,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:55:33" (1/1) ... [2020-10-14 23:55:33,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:55:33,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:55:34,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:55:34,169 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:55:34,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:55:34,194 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:55:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34 WrapperNode [2020-10-14 23:55:34,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:55:34,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:55:34,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:55:34,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:55:34,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (1/1) ... [2020-10-14 23:55:34,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:55:34,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:55:34,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:55:34,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:55:34,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (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 [2020-10-14 23:55:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:55:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:55:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:55:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:55:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:55:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:55:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:55:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:55:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:55:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:55:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:55:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:55:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:55:34,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:55:34,520 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:55:34,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:55:34 BoogieIcfgContainer [2020-10-14 23:55:34,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:55:34,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:55:34,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:55:34,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:55:34,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:55:33" (1/3) ... [2020-10-14 23:55:34,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795ccb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:55:34, skipping insertion in model container [2020-10-14 23:55:34,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:34" (2/3) ... [2020-10-14 23:55:34,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795ccb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:55:34, skipping insertion in model container [2020-10-14 23:55:34,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:55:34" (3/3) ... [2020-10-14 23:55:34,533 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_2.i [2020-10-14 23:55:34,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:55:34,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:55:34,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:55:34,597 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:55:34,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:55:34,597 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:55:34,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:55:34,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:55:34,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:55:34,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:55:34,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:55:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 23:55:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:55:34,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:34,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:34,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash 650151859, now seen corresponding path program 1 times [2020-10-14 23:55:34,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:34,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638147615] [2020-10-14 23:55:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:34,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:34,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:55:34,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:34,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:55:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:34,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:55:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:55:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:55:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:55:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:34,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:34,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:34,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638147615] [2020-10-14 23:55:34,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:55:34,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:55:34,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408063204] [2020-10-14 23:55:34,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:55:34,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:34,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:55:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:55:34,904 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-14 23:55:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:34,948 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-14 23:55:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:55:34,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 23:55:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:34,957 INFO L225 Difference]: With dead ends: 33 [2020-10-14 23:55:34,958 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 23:55:34,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:55:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 23:55:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-14 23:55:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 23:55:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-14 23:55:35,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-14 23:55:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:35,001 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-14 23:55:35,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:55:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-14 23:55:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:55:35,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:35,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:35,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:55:35,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1133927695, now seen corresponding path program 1 times [2020-10-14 23:55:35,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:35,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621820439] [2020-10-14 23:55:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:55:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:55:35,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:55:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:55:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:55:35,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:35,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621820439] [2020-10-14 23:55:35,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:35,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 23:55:35,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064965120] [2020-10-14 23:55:35,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:55:35,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:55:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:55:35,133 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-14 23:55:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:35,179 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-14 23:55:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:55:35,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 23:55:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:35,181 INFO L225 Difference]: With dead ends: 21 [2020-10-14 23:55:35,181 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 23:55:35,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:55:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 23:55:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 23:55:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 23:55:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-14 23:55:35,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-14 23:55:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:35,189 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-14 23:55:35,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:55:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-14 23:55:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:55:35,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:35,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:35,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:55:35,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1942427985, now seen corresponding path program 2 times [2020-10-14 23:55:35,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:35,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964580144] [2020-10-14 23:55:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:55:35,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:55:35,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:55:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:55:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:35,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:55:35,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:55:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:35,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964580144] [2020-10-14 23:55:35,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:35,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:55:35,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546426316] [2020-10-14 23:55:35,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:55:35,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:55:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:55:35,326 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-14 23:55:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:35,365 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-14 23:55:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:55:35,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 23:55:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:35,367 INFO L225 Difference]: With dead ends: 23 [2020-10-14 23:55:35,367 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 23:55:35,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:55:35,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 23:55:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-14 23:55:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 23:55:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-14 23:55:35,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-14 23:55:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:35,373 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-14 23:55:35,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:55:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-14 23:55:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:55:35,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:35,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:35,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:55:35,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1522126099, now seen corresponding path program 3 times [2020-10-14 23:55:35,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:35,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541743522] [2020-10-14 23:55:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:55:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 23:55:35,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:55:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:55:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:55:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:35,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541743522] [2020-10-14 23:55:35,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:35,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:55:35,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293633766] [2020-10-14 23:55:35,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:55:35,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:55:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:55:35,549 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-14 23:55:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:35,583 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-14 23:55:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:55:35,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 23:55:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:35,585 INFO L225 Difference]: With dead ends: 25 [2020-10-14 23:55:35,585 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 23:55:35,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:55:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 23:55:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-14 23:55:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 23:55:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-14 23:55:35,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-14 23:55:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:35,592 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-14 23:55:35,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:55:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-14 23:55:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:55:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:35,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:35,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:55:35,594 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1338939477, now seen corresponding path program 4 times [2020-10-14 23:55:35,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:35,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047657443] [2020-10-14 23:55:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:55:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 23:55:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:55:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:55:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:35,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:55:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:35,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047657443] [2020-10-14 23:55:35,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:35,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:55:35,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855252182] [2020-10-14 23:55:35,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:55:35,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:55:35,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:55:35,802 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-14 23:55:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:35,838 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-14 23:55:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:55:35,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-14 23:55:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:35,840 INFO L225 Difference]: With dead ends: 27 [2020-10-14 23:55:35,840 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 23:55:35,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:55:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 23:55:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 23:55:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 23:55:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-14 23:55:35,846 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-14 23:55:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:35,847 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-14 23:55:35,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:55:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-14 23:55:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:55:35,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:35,848 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:35,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:55:35,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:35,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1390254871, now seen corresponding path program 5 times [2020-10-14 23:55:35,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:35,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198189765] [2020-10-14 23:55:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:55:35,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:55:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:35,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198189765] [2020-10-14 23:55:35,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:35,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:55:35,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780677853] [2020-10-14 23:55:35,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:55:35,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:55:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:55:35,986 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-14 23:55:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:36,024 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-14 23:55:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:55:36,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 23:55:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:36,026 INFO L225 Difference]: With dead ends: 29 [2020-10-14 23:55:36,026 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 23:55:36,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:55:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 23:55:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 23:55:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 23:55:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-14 23:55:36,032 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-14 23:55:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:36,033 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-14 23:55:36,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:55:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-14 23:55:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:55:36,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:36,034 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:36,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:55:36,034 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash 835259047, now seen corresponding path program 6 times [2020-10-14 23:55:36,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:36,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941369688] [2020-10-14 23:55:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:55:36,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 23:55:36,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:55:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:55:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:36,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:36,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:36,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941369688] [2020-10-14 23:55:36,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:36,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:55:36,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526891980] [2020-10-14 23:55:36,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:55:36,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:36,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:55:36,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:55:36,215 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-14 23:55:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:36,264 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-14 23:55:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:55:36,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 23:55:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:36,266 INFO L225 Difference]: With dead ends: 31 [2020-10-14 23:55:36,266 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 23:55:36,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:55:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 23:55:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 23:55:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:55:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-14 23:55:36,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-14 23:55:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:36,278 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-14 23:55:36,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:55:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-14 23:55:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:55:36,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:36,281 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:36,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:55:36,282 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:36,282 INFO L82 PathProgramCache]: Analyzing trace with hash 660420837, now seen corresponding path program 7 times [2020-10-14 23:55:36,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:36,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684364073] [2020-10-14 23:55:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:55:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 23:55:36,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:55:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:55:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:36,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:55:36,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:36,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684364073] [2020-10-14 23:55:36,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:36,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:55:36,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646849149] [2020-10-14 23:55:36,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:55:36,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:36,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:55:36,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:55:36,476 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-14 23:55:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:36,529 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-14 23:55:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:55:36,530 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 23:55:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:36,531 INFO L225 Difference]: With dead ends: 33 [2020-10-14 23:55:36,531 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 23:55:36,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:55:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 23:55:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 23:55:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 23:55:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-14 23:55:36,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-14 23:55:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:36,537 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-14 23:55:36,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:55:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-14 23:55:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:55:36,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:36,538 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:36,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:55:36,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:36,539 INFO L82 PathProgramCache]: Analyzing trace with hash 144625571, now seen corresponding path program 8 times [2020-10-14 23:55:36,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:36,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240443645] [2020-10-14 23:55:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:55:36,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:55:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:55:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:55:36,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:36,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:36,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240443645] [2020-10-14 23:55:36,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:36,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:55:36,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748613123] [2020-10-14 23:55:36,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:55:36,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:36,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:55:36,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:55:36,711 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-14 23:55:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:36,759 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-14 23:55:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:55:36,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-14 23:55:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:36,760 INFO L225 Difference]: With dead ends: 35 [2020-10-14 23:55:36,761 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 23:55:36,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:55:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 23:55:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 23:55:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:55:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-14 23:55:36,767 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-14 23:55:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:36,768 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-14 23:55:36,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:55:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-14 23:55:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:55:36,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:36,769 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:36,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:55:36,770 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1613386015, now seen corresponding path program 9 times [2020-10-14 23:55:36,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:36,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656417576] [2020-10-14 23:55:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:55:36,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:55:36,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:55:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:55:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:36,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:36,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656417576] [2020-10-14 23:55:36,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:36,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:55:36,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067898776] [2020-10-14 23:55:36,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:55:36,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:55:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:55:36,959 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-14 23:55:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:37,005 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-14 23:55:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:55:37,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-14 23:55:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:37,006 INFO L225 Difference]: With dead ends: 37 [2020-10-14 23:55:37,007 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:55:37,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:55:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:55:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 23:55:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:55:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-14 23:55:37,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-14 23:55:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:37,013 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-14 23:55:37,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:55:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-14 23:55:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:55:37,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:37,014 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:37,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:55:37,014 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1154594463, now seen corresponding path program 10 times [2020-10-14 23:55:37,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:37,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900312127] [2020-10-14 23:55:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:55:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:55:37,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:55:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:37,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:55:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:37,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:37,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:37,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900312127] [2020-10-14 23:55:37,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:37,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:55:37,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570164124] [2020-10-14 23:55:37,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:55:37,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:37,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:55:37,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:55:37,203 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 13 states. [2020-10-14 23:55:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:37,248 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-14 23:55:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:55:37,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-14 23:55:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:37,249 INFO L225 Difference]: With dead ends: 39 [2020-10-14 23:55:37,249 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:55:37,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:55:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:55:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 23:55:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:55:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-14 23:55:37,255 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-10-14 23:55:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:37,255 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-14 23:55:37,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:55:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-14 23:55:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:55:37,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:37,256 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:37,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:55:37,257 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1695889699, now seen corresponding path program 11 times [2020-10-14 23:55:37,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:37,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072836614] [2020-10-14 23:55:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:55:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 23:55:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:55:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:55:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:37,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:37,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072836614] [2020-10-14 23:55:37,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:37,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:55:37,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821788873] [2020-10-14 23:55:37,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:55:37,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:37,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:55:37,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:55:37,492 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 14 states. [2020-10-14 23:55:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:37,535 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-14 23:55:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:55:37,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-14 23:55:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:37,536 INFO L225 Difference]: With dead ends: 41 [2020-10-14 23:55:37,536 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 23:55:37,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:55:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 23:55:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 23:55:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 23:55:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-14 23:55:37,542 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-10-14 23:55:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:37,543 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-14 23:55:37,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:55:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-14 23:55:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:55:37,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:37,544 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:37,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:55:37,544 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash -822034533, now seen corresponding path program 12 times [2020-10-14 23:55:37,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:37,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548449951] [2020-10-14 23:55:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:55:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:55:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:37,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548449951] [2020-10-14 23:55:37,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:37,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:55:37,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441486353] [2020-10-14 23:55:37,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:55:37,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:55:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:55:37,811 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-10-14 23:55:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:37,860 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-14 23:55:37,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:55:37,861 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:55:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:37,861 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:55:37,862 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:55:37,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:55:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:55:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 23:55:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:55:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-14 23:55:37,867 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-10-14 23:55:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:37,867 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-14 23:55:37,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:55:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-14 23:55:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:55:37,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:37,868 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:37,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:55:37,869 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:37,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1434157273, now seen corresponding path program 13 times [2020-10-14 23:55:37,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:37,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248874667] [2020-10-14 23:55:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:37,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:37,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:55:37,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 23:55:37,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:37,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:55:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:55:37,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:38,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:38,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:38,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:38,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:38,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248874667] [2020-10-14 23:55:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:55:38,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63893775] [2020-10-14 23:55:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:55:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:55:38,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:55:38,149 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 16 states. [2020-10-14 23:55:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:38,213 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-14 23:55:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:55:38,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 23:55:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:38,214 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:55:38,214 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 23:55:38,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:55:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 23:55:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 23:55:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:55:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-14 23:55:38,220 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-10-14 23:55:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:38,220 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-14 23:55:38,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:55:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-14 23:55:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:55:38,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:38,221 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:38,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:55:38,221 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 675998359, now seen corresponding path program 14 times [2020-10-14 23:55:38,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:38,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855956509] [2020-10-14 23:55:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:38,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:38,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:55:38,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 23:55:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:38,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:55:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:55:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:38,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:38,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:38,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855956509] [2020-10-14 23:55:38,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:38,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:55:38,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493020643] [2020-10-14 23:55:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:55:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:38,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:55:38,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:55:38,491 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 17 states. [2020-10-14 23:55:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:38,544 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-14 23:55:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:55:38,545 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-14 23:55:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:38,545 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:55:38,545 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:55:38,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:55:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:55:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 23:55:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:55:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-14 23:55:38,550 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2020-10-14 23:55:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:38,551 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-14 23:55:38,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:55:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-14 23:55:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:55:38,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:38,552 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:38,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:55:38,552 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:38,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2065244971, now seen corresponding path program 15 times [2020-10-14 23:55:38,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:38,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022102665] [2020-10-14 23:55:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:38,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:38,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:55:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 23:55:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:38,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:55:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:55:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:38,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:38,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:38,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:38,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:38,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:38,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022102665] [2020-10-14 23:55:38,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:38,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:55:38,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735755658] [2020-10-14 23:55:38,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:55:38,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:38,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:55:38,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:55:38,851 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2020-10-14 23:55:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:38,913 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-14 23:55:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:55:38,914 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-14 23:55:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:38,915 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:55:38,915 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:55:38,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:55:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:55:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 23:55:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:55:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-10-14 23:55:38,921 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2020-10-14 23:55:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:38,921 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-10-14 23:55:38,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:55:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-10-14 23:55:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:55:38,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:38,923 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:38,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:55:38,923 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:38,924 INFO L82 PathProgramCache]: Analyzing trace with hash 709834643, now seen corresponding path program 16 times [2020-10-14 23:55:38,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:38,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305358005] [2020-10-14 23:55:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:39,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:39,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:55:39,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 23:55:39,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:39,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:55:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:55:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:39,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:39,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:39,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305358005] [2020-10-14 23:55:39,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:55:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676020509] [2020-10-14 23:55:39,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:55:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:55:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:55:39,324 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 19 states. [2020-10-14 23:55:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:39,386 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-10-14 23:55:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:55:39,387 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-14 23:55:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:39,388 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:55:39,388 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:55:39,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:55:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:55:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 23:55:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:55:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-14 23:55:39,394 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2020-10-14 23:55:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:39,394 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-14 23:55:39,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:55:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-14 23:55:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:55:39,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:39,395 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:39,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:55:39,396 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash 386652881, now seen corresponding path program 17 times [2020-10-14 23:55:39,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:39,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895513379] [2020-10-14 23:55:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:55:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:55:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:39,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:55:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:55:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:39,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:39,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:39,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:39,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:39,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:39,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:39,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:39,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:39,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:39,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895513379] [2020-10-14 23:55:39,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:39,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:55:39,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608730931] [2020-10-14 23:55:39,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:55:39,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:55:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:55:39,765 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 20 states. [2020-10-14 23:55:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:39,826 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-14 23:55:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:55:39,827 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-10-14 23:55:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:39,827 INFO L225 Difference]: With dead ends: 53 [2020-10-14 23:55:39,828 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:55:39,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:55:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:55:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 23:55:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:55:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-14 23:55:39,833 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2020-10-14 23:55:39,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:39,833 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-14 23:55:39,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:55:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-14 23:55:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:55:39,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:39,834 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:39,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:55:39,835 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:39,835 INFO L82 PathProgramCache]: Analyzing trace with hash -953375089, now seen corresponding path program 18 times [2020-10-14 23:55:39,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:39,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755548785] [2020-10-14 23:55:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:55:39,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 23:55:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:39,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:55:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:55:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:40,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:40,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:40,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755548785] [2020-10-14 23:55:40,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:40,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:55:40,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969996608] [2020-10-14 23:55:40,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:55:40,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:55:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:55:40,234 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 21 states. [2020-10-14 23:55:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:40,307 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-14 23:55:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:55:40,308 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-10-14 23:55:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:40,309 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:55:40,309 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:55:40,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:55:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:55:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 23:55:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:55:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-14 23:55:40,315 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2020-10-14 23:55:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:40,316 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-14 23:55:40,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:55:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-14 23:55:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:55:40,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:40,317 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:40,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:55:40,317 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash -230065459, now seen corresponding path program 19 times [2020-10-14 23:55:40,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:40,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152432662] [2020-10-14 23:55:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:40,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:55:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 23:55:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:40,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:55:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:55:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:40,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:40,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152432662] [2020-10-14 23:55:40,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:40,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:55:40,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886112426] [2020-10-14 23:55:40,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:55:40,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:40,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:55:40,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:55:40,828 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 22 states. [2020-10-14 23:55:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:40,895 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-10-14 23:55:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:55:40,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2020-10-14 23:55:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:40,896 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:55:40,896 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:55:40,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:55:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:55:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 23:55:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:55:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-14 23:55:40,904 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2020-10-14 23:55:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:40,904 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-14 23:55:40,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:55:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-14 23:55:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:55:40,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:40,909 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:40,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:55:40,910 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash -914212981, now seen corresponding path program 20 times [2020-10-14 23:55:40,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:40,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571820851] [2020-10-14 23:55:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:41,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:41,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:55:41,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:41,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 23:55:41,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:41,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:41,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:55:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:55:41,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:41,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:41,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:41,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:41,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:41,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571820851] [2020-10-14 23:55:41,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:41,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:55:41,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502672932] [2020-10-14 23:55:41,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:55:41,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:41,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:55:41,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:55:41,371 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 23 states. [2020-10-14 23:55:41,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:41,443 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-14 23:55:41,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:55:41,443 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-14 23:55:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:41,444 INFO L225 Difference]: With dead ends: 59 [2020-10-14 23:55:41,444 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:55:41,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:55:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:55:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 23:55:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:55:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-10-14 23:55:41,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2020-10-14 23:55:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:41,454 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-10-14 23:55:41,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:55:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-10-14 23:55:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:55:41,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:41,455 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:41,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:55:41,455 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:41,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1249985335, now seen corresponding path program 21 times [2020-10-14 23:55:41,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:41,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53804460] [2020-10-14 23:55:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:41,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:55:41,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 23:55:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:41,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:55:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:55:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:41,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:41,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:41,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53804460] [2020-10-14 23:55:41,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:41,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:55:41,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024388982] [2020-10-14 23:55:41,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:55:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:55:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:55:41,921 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 24 states. [2020-10-14 23:55:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:41,996 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-10-14 23:55:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:55:41,997 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-14 23:55:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:41,997 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:55:41,997 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:55:41,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:55:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:55:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 23:55:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:55:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-14 23:55:42,002 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2020-10-14 23:55:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:42,002 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-14 23:55:42,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:55:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-14 23:55:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:55:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:42,003 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:42,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:55:42,004 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1804670329, now seen corresponding path program 22 times [2020-10-14 23:55:42,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:42,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065476171] [2020-10-14 23:55:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:55:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 23:55:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:42,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:55:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:55:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:42,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:42,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:42,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:42,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:42,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:42,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065476171] [2020-10-14 23:55:42,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:42,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:55:42,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389333006] [2020-10-14 23:55:42,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:55:42,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:55:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:55:42,540 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 25 states. [2020-10-14 23:55:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:42,632 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-10-14 23:55:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:55:42,632 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 54 [2020-10-14 23:55:42,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:42,634 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:55:42,634 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:55:42,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:55:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:55:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 23:55:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:55:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-14 23:55:42,640 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2020-10-14 23:55:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:42,640 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-14 23:55:42,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:55:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-14 23:55:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:55:42,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:42,641 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:42,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:55:42,642 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2013962437, now seen corresponding path program 23 times [2020-10-14 23:55:42,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:42,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229670548] [2020-10-14 23:55:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:55:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 23:55:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:42,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:55:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:55:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:43,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:43,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:43,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:43,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:43,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:43,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229670548] [2020-10-14 23:55:43,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:43,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:55:43,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930091862] [2020-10-14 23:55:43,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:55:43,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:43,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:55:43,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:55:43,209 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 26 states. [2020-10-14 23:55:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:43,308 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-10-14 23:55:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:55:43,308 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 56 [2020-10-14 23:55:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:43,309 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:55:43,309 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:55:43,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:55:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:55:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 23:55:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:55:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-10-14 23:55:43,315 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2020-10-14 23:55:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:43,316 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-10-14 23:55:43,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:55:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-10-14 23:55:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:55:43,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:43,319 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:43,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:55:43,322 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash -476987517, now seen corresponding path program 24 times [2020-10-14 23:55:43,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:43,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824122695] [2020-10-14 23:55:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:43,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:43,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:55:43,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 23:55:43,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:43,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:55:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:55:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:43,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:43,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:43,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:43,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:43,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:43,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:43,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824122695] [2020-10-14 23:55:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:43,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:55:43,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816100903] [2020-10-14 23:55:43,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:55:43,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:55:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:55:43,921 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 27 states. [2020-10-14 23:55:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:44,002 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-14 23:55:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:55:44,004 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2020-10-14 23:55:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:44,005 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:55:44,005 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:55:44,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:55:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:55:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 23:55:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:55:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-14 23:55:44,010 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2020-10-14 23:55:44,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:44,011 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-14 23:55:44,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:55:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-14 23:55:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:55:44,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:44,012 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:44,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:55:44,012 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:44,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1983109439, now seen corresponding path program 25 times [2020-10-14 23:55:44,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:44,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273491298] [2020-10-14 23:55:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:44,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:44,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:55:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:55:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:44,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:44,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:44,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:44,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:44,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:44,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:44,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:44,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:44,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273491298] [2020-10-14 23:55:44,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:44,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:55:44,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913355474] [2020-10-14 23:55:44,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:55:44,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:44,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:55:44,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:55:44,635 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 28 states. [2020-10-14 23:55:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:44,728 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-14 23:55:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:55:44,729 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-14 23:55:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:44,730 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:55:44,730 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:55:44,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:55:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:55:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 23:55:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:55:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-10-14 23:55:44,734 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2020-10-14 23:55:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:44,734 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-10-14 23:55:44,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:55:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-10-14 23:55:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:55:44,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:44,735 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:44,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:55:44,735 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:44,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1962297729, now seen corresponding path program 26 times [2020-10-14 23:55:44,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:44,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043112562] [2020-10-14 23:55:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:44,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:55:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:55:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:45,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:45,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:45,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043112562] [2020-10-14 23:55:45,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:45,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:55:45,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215917113] [2020-10-14 23:55:45,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:55:45,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:45,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:55:45,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:55:45,398 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 29 states. [2020-10-14 23:55:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:45,493 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2020-10-14 23:55:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:55:45,494 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 62 [2020-10-14 23:55:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:45,494 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:55:45,495 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:55:45,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:55:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:55:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 23:55:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:55:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-10-14 23:55:45,499 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2020-10-14 23:55:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:45,499 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-10-14 23:55:45,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:55:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-10-14 23:55:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:55:45,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:45,500 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:45,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:55:45,501 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 857886397, now seen corresponding path program 27 times [2020-10-14 23:55:45,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:45,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923710110] [2020-10-14 23:55:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:45,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:45,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:55:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:45,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:55:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:46,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:46,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:46,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:46,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:46,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923710110] [2020-10-14 23:55:46,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:46,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:55:46,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305234909] [2020-10-14 23:55:46,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:55:46,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:55:46,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:55:46,193 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 30 states. [2020-10-14 23:55:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:46,290 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-10-14 23:55:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:55:46,290 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-10-14 23:55:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:46,292 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:55:46,292 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:55:46,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:55:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:55:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 23:55:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:55:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-14 23:55:46,297 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2020-10-14 23:55:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:46,298 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-14 23:55:46,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:55:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-14 23:55:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:55:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:46,299 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:46,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:55:46,299 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash 930467707, now seen corresponding path program 28 times [2020-10-14 23:55:46,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:46,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058158912] [2020-10-14 23:55:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:46,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:55:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 23:55:46,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:46,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:55:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:55:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:47,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058158912] [2020-10-14 23:55:47,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:47,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:55:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442559250] [2020-10-14 23:55:47,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:55:47,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:55:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:55:47,011 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 31 states. [2020-10-14 23:55:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:47,118 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-10-14 23:55:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:55:47,119 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-14 23:55:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:47,120 INFO L225 Difference]: With dead ends: 75 [2020-10-14 23:55:47,120 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 23:55:47,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:55:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 23:55:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 23:55:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:55:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-10-14 23:55:47,128 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2020-10-14 23:55:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:47,128 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-10-14 23:55:47,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:55:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-10-14 23:55:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:55:47,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:47,129 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:47,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:55:47,130 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1961629881, now seen corresponding path program 29 times [2020-10-14 23:55:47,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:47,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651582493] [2020-10-14 23:55:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:47,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:47,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:55:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:55:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:47,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:47,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651582493] [2020-10-14 23:55:47,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:47,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:55:47,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517381437] [2020-10-14 23:55:47,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:55:47,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:55:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:55:47,858 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 32 states. [2020-10-14 23:55:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:47,966 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-14 23:55:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 23:55:47,967 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 68 [2020-10-14 23:55:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:47,968 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:55:47,968 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:55:47,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:55:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:55:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 23:55:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 23:55:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-10-14 23:55:47,974 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2020-10-14 23:55:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:47,975 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-10-14 23:55:47,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:55:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-10-14 23:55:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:55:47,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:47,976 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:47,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:55:47,977 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash 771033719, now seen corresponding path program 30 times [2020-10-14 23:55:47,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:47,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450853080] [2020-10-14 23:55:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:55:48,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 23:55:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:48,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:55:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:55:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:48,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:48,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:48,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450853080] [2020-10-14 23:55:48,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:48,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 23:55:48,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084510427] [2020-10-14 23:55:48,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 23:55:48,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:48,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 23:55:48,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:55:48,807 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 33 states. [2020-10-14 23:55:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:48,907 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-14 23:55:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:55:48,908 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 70 [2020-10-14 23:55:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:48,909 INFO L225 Difference]: With dead ends: 79 [2020-10-14 23:55:48,909 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:55:48,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:55:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:55:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 23:55:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 23:55:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-10-14 23:55:48,914 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2020-10-14 23:55:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:48,914 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-10-14 23:55:48,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 23:55:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-10-14 23:55:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:55:48,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:48,917 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:48,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:55:48,917 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:48,918 INFO L82 PathProgramCache]: Analyzing trace with hash -930577227, now seen corresponding path program 31 times [2020-10-14 23:55:48,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:48,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308828954] [2020-10-14 23:55:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:49,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:49,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:55:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:55:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:49,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:49,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:49,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308828954] [2020-10-14 23:55:49,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:49,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:55:49,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100104138] [2020-10-14 23:55:49,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:55:49,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:49,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:55:49,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:55:49,757 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 34 states. [2020-10-14 23:55:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:49,892 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-10-14 23:55:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:55:49,892 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 72 [2020-10-14 23:55:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:49,893 INFO L225 Difference]: With dead ends: 81 [2020-10-14 23:55:49,893 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:55:49,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:55:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:55:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 23:55:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:55:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-10-14 23:55:49,900 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2020-10-14 23:55:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:49,900 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-10-14 23:55:49,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:55:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-10-14 23:55:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:55:49,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:49,901 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:49,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:55:49,901 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash 203843443, now seen corresponding path program 32 times [2020-10-14 23:55:49,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:49,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920644886] [2020-10-14 23:55:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:55:50,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:55:50,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:50,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:55:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:55:50,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:50,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:50,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:50,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:50,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:55:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:50,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920644886] [2020-10-14 23:55:50,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:50,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:55:50,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129299529] [2020-10-14 23:55:50,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:55:50,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:55:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:55:50,827 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 35 states. [2020-10-14 23:55:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:50,943 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-10-14 23:55:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 23:55:50,944 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 74 [2020-10-14 23:55:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:50,945 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:55:50,945 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 23:55:50,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:55:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 23:55:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 23:55:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:55:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-14 23:55:50,950 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2020-10-14 23:55:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:50,950 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-14 23:55:50,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:55:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-14 23:55:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:55:50,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:50,951 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:55:50,952 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash -539585871, now seen corresponding path program 33 times [2020-10-14 23:55:50,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:50,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141763485] [2020-10-14 23:55:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:50,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:55:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:55:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:51,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:51,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141763485] [2020-10-14 23:55:51,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:51,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:55:51,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821118008] [2020-10-14 23:55:51,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:55:51,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:55:52,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:55:52,000 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 36 states. [2020-10-14 23:55:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:52,132 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-10-14 23:55:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:55:52,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 76 [2020-10-14 23:55:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:52,133 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:55:52,134 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:55:52,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:55:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:55:52,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 23:55:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 23:55:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2020-10-14 23:55:52,147 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2020-10-14 23:55:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:52,148 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2020-10-14 23:55:52,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:55:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2020-10-14 23:55:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:55:52,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:52,150 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:52,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:55:52,159 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:52,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2010585489, now seen corresponding path program 34 times [2020-10-14 23:55:52,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:52,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484016798] [2020-10-14 23:55:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:55:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:55:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:52,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:55:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:55:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:53,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:53,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:53,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:53,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484016798] [2020-10-14 23:55:53,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:53,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:55:53,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797128900] [2020-10-14 23:55:53,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:55:53,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:53,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:55:53,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:55:53,216 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 37 states. [2020-10-14 23:55:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:53,353 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-10-14 23:55:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:55:53,353 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 78 [2020-10-14 23:55:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:53,354 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:55:53,355 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 23:55:53,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:55:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 23:55:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 23:55:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:55:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-10-14 23:55:53,359 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2020-10-14 23:55:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:53,360 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-10-14 23:55:53,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:55:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-10-14 23:55:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:55:53,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:53,361 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:53,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:55:53,361 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1697989293, now seen corresponding path program 35 times [2020-10-14 23:55:53,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:53,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530152208] [2020-10-14 23:55:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:53,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:55:53,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 23:55:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:53,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:55:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:55:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:54,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:54,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:54,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530152208] [2020-10-14 23:55:54,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:54,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 23:55:54,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163211690] [2020-10-14 23:55:54,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 23:55:54,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:54,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 23:55:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:55:54,583 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 38 states. [2020-10-14 23:55:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:54,691 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-10-14 23:55:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 23:55:54,693 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 80 [2020-10-14 23:55:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:54,694 INFO L225 Difference]: With dead ends: 89 [2020-10-14 23:55:54,694 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 23:55:54,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:55:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 23:55:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 23:55:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:55:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-10-14 23:55:54,700 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2020-10-14 23:55:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:54,700 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-10-14 23:55:54,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 23:55:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-10-14 23:55:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 23:55:54,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:54,701 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:54,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:55:54,701 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 815499115, now seen corresponding path program 36 times [2020-10-14 23:55:54,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:54,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456538778] [2020-10-14 23:55:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:55,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:55:55,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 23:55:55,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:55,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:55:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:55:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:55,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:55,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:55,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:55,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:55,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:55,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:55,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:55,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456538778] [2020-10-14 23:55:55,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:55,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 23:55:55,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937235834] [2020-10-14 23:55:55,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 23:55:55,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 23:55:55,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:55:55,818 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 39 states. [2020-10-14 23:55:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:55,925 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-10-14 23:55:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 23:55:55,926 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 82 [2020-10-14 23:55:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:55,927 INFO L225 Difference]: With dead ends: 91 [2020-10-14 23:55:55,927 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:55:55,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:55:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:55:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 23:55:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 23:55:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-14 23:55:55,933 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2020-10-14 23:55:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:55,933 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-14 23:55:55,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 23:55:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-14 23:55:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:55:55,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:55,935 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:55,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:55:55,935 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:55,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1149004631, now seen corresponding path program 37 times [2020-10-14 23:55:55,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:55,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007124711] [2020-10-14 23:55:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:56,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:55:56,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-14 23:55:56,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:56,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 23:55:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:55:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:57,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:57,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:55:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:57,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:55:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:57,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007124711] [2020-10-14 23:55:57,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:57,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 23:55:57,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390387681] [2020-10-14 23:55:57,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 23:55:57,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 23:55:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:55:57,379 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 40 states. [2020-10-14 23:55:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:57,520 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-10-14 23:55:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 23:55:57,520 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 84 [2020-10-14 23:55:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:57,521 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:55:57,521 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 23:55:57,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:55:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 23:55:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 23:55:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 23:55:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-10-14 23:55:57,525 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2020-10-14 23:55:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:57,525 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-10-14 23:55:57,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 23:55:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-10-14 23:55:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:55:57,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:57,527 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:57,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:55:57,527 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:57,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:57,527 INFO L82 PathProgramCache]: Analyzing trace with hash 748505703, now seen corresponding path program 38 times [2020-10-14 23:55:57,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:57,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857378115] [2020-10-14 23:55:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:55:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:55:57,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:55:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:55:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:55:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:58,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:55:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:55:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:55:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:55:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:55:58,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857378115] [2020-10-14 23:55:58,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:55:58,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 23:55:58,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478497249] [2020-10-14 23:55:58,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 23:55:58,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:55:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 23:55:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:55:58,721 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 41 states. [2020-10-14 23:55:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:55:58,881 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2020-10-14 23:55:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 23:55:58,882 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 86 [2020-10-14 23:55:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:55:58,883 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:55:58,883 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 23:55:58,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:55:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 23:55:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 23:55:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:55:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2020-10-14 23:55:58,893 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2020-10-14 23:55:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:55:58,894 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2020-10-14 23:55:58,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 23:55:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2020-10-14 23:55:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:55:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:55:58,896 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:55:58,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:55:58,896 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:55:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:55:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1105164123, now seen corresponding path program 39 times [2020-10-14 23:55:58,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:55:58,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431347478] [2020-10-14 23:55:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:55:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:55:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:55:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:55:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:55:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:55:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-14 23:55:59,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:55:59,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:55:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:55:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:55:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 23:55:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:00,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:00,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:00,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431347478] [2020-10-14 23:56:00,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:00,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 23:56:00,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804266046] [2020-10-14 23:56:00,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 23:56:00,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:00,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 23:56:00,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:56:00,176 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 42 states. [2020-10-14 23:56:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:00,329 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-10-14 23:56:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 23:56:00,330 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 88 [2020-10-14 23:56:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:00,331 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:56:00,331 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 23:56:00,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:56:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 23:56:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 23:56:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 23:56:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-14 23:56:00,336 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2020-10-14 23:56:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:00,336 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-14 23:56:00,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 23:56:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-14 23:56:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:56:00,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:00,337 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:00,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:56:00,338 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -70439069, now seen corresponding path program 40 times [2020-10-14 23:56:00,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:00,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027487692] [2020-10-14 23:56:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:00,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 23:56:00,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:00,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 23:56:00,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:00,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 23:56:00,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:56:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:01,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027487692] [2020-10-14 23:56:01,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:01,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 23:56:01,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571024359] [2020-10-14 23:56:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 23:56:01,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 23:56:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:56:01,491 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 43 states. [2020-10-14 23:56:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:01,657 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-10-14 23:56:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 23:56:01,660 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 90 [2020-10-14 23:56:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:01,661 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:56:01,661 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 23:56:01,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:56:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 23:56:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 23:56:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 23:56:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2020-10-14 23:56:01,668 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2020-10-14 23:56:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:01,668 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2020-10-14 23:56:01,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 23:56:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2020-10-14 23:56:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 23:56:01,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:01,669 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:01,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:56:01,670 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:01,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:01,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2132074847, now seen corresponding path program 41 times [2020-10-14 23:56:01,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:01,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155968288] [2020-10-14 23:56:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:01,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:01,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:56:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 23:56:01,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:01,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:56:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:56:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:02,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:02,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:02,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155968288] [2020-10-14 23:56:02,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:02,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 23:56:02,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437345314] [2020-10-14 23:56:02,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 23:56:02,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 23:56:02,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:56:02,889 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 44 states. [2020-10-14 23:56:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:03,021 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2020-10-14 23:56:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 23:56:03,021 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 92 [2020-10-14 23:56:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:03,022 INFO L225 Difference]: With dead ends: 101 [2020-10-14 23:56:03,022 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:56:03,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:56:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:56:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 23:56:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:56:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-10-14 23:56:03,028 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2020-10-14 23:56:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:03,028 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-10-14 23:56:03,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 23:56:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-10-14 23:56:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 23:56:03,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:03,029 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:03,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:56:03,030 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 910833247, now seen corresponding path program 42 times [2020-10-14 23:56:03,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:03,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715515168] [2020-10-14 23:56:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:03,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:03,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 23:56:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:04,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:04,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715515168] [2020-10-14 23:56:04,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:04,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 23:56:04,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346496120] [2020-10-14 23:56:04,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 23:56:04,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:04,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 23:56:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:56:04,502 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 45 states. [2020-10-14 23:56:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:04,659 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-10-14 23:56:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 23:56:04,661 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 94 [2020-10-14 23:56:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:04,662 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:56:04,662 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 23:56:04,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:56:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 23:56:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 23:56:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:56:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-14 23:56:04,667 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2020-10-14 23:56:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:04,667 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-14 23:56:04,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 23:56:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-14 23:56:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:56:04,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:04,669 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:04,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:56:04,669 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash 272783005, now seen corresponding path program 43 times [2020-10-14 23:56:04,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:04,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444582273] [2020-10-14 23:56:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:04,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:56:04,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:06,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444582273] [2020-10-14 23:56:06,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:06,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 23:56:06,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770599476] [2020-10-14 23:56:06,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 23:56:06,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 23:56:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:56:06,041 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 46 states. [2020-10-14 23:56:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:06,181 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2020-10-14 23:56:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 23:56:06,181 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 96 [2020-10-14 23:56:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:06,182 INFO L225 Difference]: With dead ends: 105 [2020-10-14 23:56:06,182 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 23:56:06,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:56:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 23:56:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 23:56:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 23:56:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2020-10-14 23:56:06,187 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2020-10-14 23:56:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:06,187 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2020-10-14 23:56:06,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 23:56:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2020-10-14 23:56:06,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 23:56:06,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:06,188 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:06,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:56:06,189 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:06,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1286823771, now seen corresponding path program 44 times [2020-10-14 23:56:06,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:06,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707706021] [2020-10-14 23:56:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 23:56:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:07,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:07,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707706021] [2020-10-14 23:56:07,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:07,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 23:56:07,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123224504] [2020-10-14 23:56:07,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 23:56:07,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 23:56:07,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:56:07,572 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 47 states. [2020-10-14 23:56:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:07,733 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-10-14 23:56:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 23:56:07,733 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 98 [2020-10-14 23:56:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:07,735 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:56:07,735 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 23:56:07,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 23:56:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 23:56:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 23:56:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 23:56:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-10-14 23:56:07,739 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2020-10-14 23:56:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:07,740 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-10-14 23:56:07,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 23:56:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-10-14 23:56:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:56:07,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:07,741 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:07,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:56:07,741 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash 822423705, now seen corresponding path program 45 times [2020-10-14 23:56:07,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:07,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146959222] [2020-10-14 23:56:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:07,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 23:56:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 23:56:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:09,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:09,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:09,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146959222] [2020-10-14 23:56:09,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:09,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 23:56:09,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315707372] [2020-10-14 23:56:09,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 23:56:09,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:09,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 23:56:09,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:56:09,197 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 48 states. [2020-10-14 23:56:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:09,360 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2020-10-14 23:56:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 23:56:09,360 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 100 [2020-10-14 23:56:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:09,361 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:56:09,362 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 23:56:09,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:56:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 23:56:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 23:56:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 23:56:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2020-10-14 23:56:09,366 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2020-10-14 23:56:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:09,367 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2020-10-14 23:56:09,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 23:56:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2020-10-14 23:56:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 23:56:09,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:09,368 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:09,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:56:09,368 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1210559063, now seen corresponding path program 46 times [2020-10-14 23:56:09,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:09,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088029530] [2020-10-14 23:56:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 23:56:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:56:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:10,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:10,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:10,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:10,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:10,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:10,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:10,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:10,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088029530] [2020-10-14 23:56:10,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:10,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 23:56:10,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941740809] [2020-10-14 23:56:10,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 23:56:10,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 23:56:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:56:10,923 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 49 states. [2020-10-14 23:56:11,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:11,077 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2020-10-14 23:56:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 23:56:11,078 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 102 [2020-10-14 23:56:11,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:11,079 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:56:11,079 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 23:56:11,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:56:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 23:56:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 23:56:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:56:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-10-14 23:56:11,084 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2020-10-14 23:56:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:11,085 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-10-14 23:56:11,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 23:56:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-10-14 23:56:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:56:11,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:11,086 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:11,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:56:11,086 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash 546483349, now seen corresponding path program 47 times [2020-10-14 23:56:11,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:11,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045255045] [2020-10-14 23:56:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:56:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 23:56:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:11,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 23:56:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 23:56:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:12,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:12,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:12,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045255045] [2020-10-14 23:56:12,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:12,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 23:56:12,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251400672] [2020-10-14 23:56:12,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 23:56:12,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:12,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 23:56:12,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:56:12,711 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 50 states. [2020-10-14 23:56:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:12,911 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2020-10-14 23:56:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 23:56:12,912 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 104 [2020-10-14 23:56:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:12,913 INFO L225 Difference]: With dead ends: 113 [2020-10-14 23:56:12,913 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 23:56:12,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:56:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 23:56:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 23:56:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 23:56:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-10-14 23:56:12,918 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2020-10-14 23:56:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:12,918 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-10-14 23:56:12,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 23:56:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-10-14 23:56:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 23:56:12,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:12,919 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:12,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:56:12,919 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:12,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1975117997, now seen corresponding path program 48 times [2020-10-14 23:56:12,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:12,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008683484] [2020-10-14 23:56:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 23:56:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 23:56:13,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:13,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 23:56:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:13,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 23:56:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:14,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:14,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008683484] [2020-10-14 23:56:14,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:14,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 23:56:14,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415977121] [2020-10-14 23:56:14,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 23:56:14,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:14,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 23:56:14,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:56:14,595 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 51 states. [2020-10-14 23:56:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:14,744 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-10-14 23:56:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 23:56:14,745 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 106 [2020-10-14 23:56:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:14,746 INFO L225 Difference]: With dead ends: 115 [2020-10-14 23:56:14,746 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 23:56:14,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:56:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 23:56:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 23:56:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 23:56:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2020-10-14 23:56:14,751 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2020-10-14 23:56:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:14,752 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2020-10-14 23:56:14,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 23:56:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2020-10-14 23:56:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 23:56:14,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:14,753 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:14,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:56:14,753 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:14,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1422510737, now seen corresponding path program 49 times [2020-10-14 23:56:14,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:14,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776240697] [2020-10-14 23:56:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:15,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 23:56:15,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 23:56:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:16,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:16,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:16,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:16,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776240697] [2020-10-14 23:56:16,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:16,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 23:56:16,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669931536] [2020-10-14 23:56:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 23:56:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 23:56:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:56:16,549 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 52 states. [2020-10-14 23:56:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:16,718 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-10-14 23:56:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 23:56:16,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 108 [2020-10-14 23:56:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:16,723 INFO L225 Difference]: With dead ends: 117 [2020-10-14 23:56:16,723 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 23:56:16,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 23:56:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 23:56:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 23:56:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 23:56:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-10-14 23:56:16,728 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2020-10-14 23:56:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:16,729 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-10-14 23:56:16,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 23:56:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-10-14 23:56:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 23:56:16,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:16,730 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:16,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:56:16,730 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1926388145, now seen corresponding path program 50 times [2020-10-14 23:56:16,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:16,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343539604] [2020-10-14 23:56:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:16,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:56:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:18,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:18,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:18,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:18,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:18,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343539604] [2020-10-14 23:56:18,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:18,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-14 23:56:18,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126617312] [2020-10-14 23:56:18,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-14 23:56:18,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-14 23:56:18,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:56:18,483 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 53 states. [2020-10-14 23:56:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:18,662 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2020-10-14 23:56:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 23:56:18,662 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 110 [2020-10-14 23:56:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:18,663 INFO L225 Difference]: With dead ends: 119 [2020-10-14 23:56:18,663 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 23:56:18,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:56:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 23:56:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 23:56:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 23:56:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-10-14 23:56:18,668 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2020-10-14 23:56:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:18,668 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-10-14 23:56:18,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-14 23:56:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-10-14 23:56:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 23:56:18,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:18,669 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:18,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:56:18,670 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1007258253, now seen corresponding path program 51 times [2020-10-14 23:56:18,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:18,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599009785] [2020-10-14 23:56:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:19,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 23:56:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:20,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:20,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599009785] [2020-10-14 23:56:20,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:20,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-14 23:56:20,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542981320] [2020-10-14 23:56:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-14 23:56:20,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-14 23:56:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 23:56:20,501 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 54 states. [2020-10-14 23:56:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:20,692 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-10-14 23:56:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 23:56:20,693 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 112 [2020-10-14 23:56:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:20,694 INFO L225 Difference]: With dead ends: 121 [2020-10-14 23:56:20,694 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 23:56:20,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 23:56:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 23:56:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-14 23:56:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 23:56:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2020-10-14 23:56:20,698 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2020-10-14 23:56:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:20,698 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2020-10-14 23:56:20,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-14 23:56:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2020-10-14 23:56:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 23:56:20,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:20,699 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:20,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:56:20,700 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:20,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1552066741, now seen corresponding path program 52 times [2020-10-14 23:56:20,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:20,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117389308] [2020-10-14 23:56:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:21,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 23:56:21,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 23:56:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:22,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:22,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:22,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:22,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:22,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:22,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117389308] [2020-10-14 23:56:22,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:22,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 23:56:22,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800856640] [2020-10-14 23:56:22,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 23:56:22,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:22,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 23:56:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:56:22,628 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 55 states. [2020-10-14 23:56:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:22,832 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2020-10-14 23:56:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 23:56:22,832 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 114 [2020-10-14 23:56:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:22,833 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:56:22,833 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:56:22,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:56:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:56:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 23:56:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 23:56:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2020-10-14 23:56:22,838 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2020-10-14 23:56:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:22,839 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2020-10-14 23:56:22,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 23:56:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2020-10-14 23:56:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:56:22,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:22,840 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:22,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:56:22,840 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:22,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -47125367, now seen corresponding path program 53 times [2020-10-14 23:56:22,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:22,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371412815] [2020-10-14 23:56:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:23,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:23,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:56:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 23:56:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:24,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:24,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371412815] [2020-10-14 23:56:24,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:24,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-14 23:56:24,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512701644] [2020-10-14 23:56:24,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-14 23:56:24,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:24,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-14 23:56:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:56:24,844 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 56 states. [2020-10-14 23:56:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:25,067 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2020-10-14 23:56:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 23:56:25,067 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 116 [2020-10-14 23:56:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:25,068 INFO L225 Difference]: With dead ends: 125 [2020-10-14 23:56:25,068 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 23:56:25,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 23:56:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 23:56:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-14 23:56:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 23:56:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2020-10-14 23:56:25,073 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2020-10-14 23:56:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:25,073 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2020-10-14 23:56:25,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-14 23:56:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2020-10-14 23:56:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 23:56:25,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:25,075 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:25,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:56:25,075 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1202443705, now seen corresponding path program 54 times [2020-10-14 23:56:25,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:25,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530714661] [2020-10-14 23:56:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:25,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:56:25,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 23:56:25,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:25,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-14 23:56:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 23:56:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:27,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530714661] [2020-10-14 23:56:27,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:27,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-14 23:56:27,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227193107] [2020-10-14 23:56:27,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-14 23:56:27,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-14 23:56:27,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 23:56:27,175 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 57 states. [2020-10-14 23:56:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:27,370 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2020-10-14 23:56:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 23:56:27,371 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 118 [2020-10-14 23:56:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:27,372 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:56:27,372 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:56:27,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 23:56:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:56:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-14 23:56:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 23:56:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2020-10-14 23:56:27,376 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2020-10-14 23:56:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:27,376 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2020-10-14 23:56:27,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-14 23:56:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2020-10-14 23:56:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 23:56:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:27,378 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:27,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:56:27,378 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:27,378 INFO L82 PathProgramCache]: Analyzing trace with hash 933163141, now seen corresponding path program 55 times [2020-10-14 23:56:27,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:27,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680085748] [2020-10-14 23:56:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:27,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 23:56:27,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 23:56:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:27,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-14 23:56:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 23:56:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:29,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:29,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:29,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:29,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:29,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:29,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:29,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680085748] [2020-10-14 23:56:29,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:29,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 23:56:29,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156977069] [2020-10-14 23:56:29,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 23:56:29,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 23:56:29,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:56:29,549 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 58 states. [2020-10-14 23:56:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:29,766 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2020-10-14 23:56:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 23:56:29,767 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 120 [2020-10-14 23:56:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:29,768 INFO L225 Difference]: With dead ends: 129 [2020-10-14 23:56:29,768 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 23:56:29,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 23:56:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 23:56:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-14 23:56:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 23:56:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2020-10-14 23:56:29,771 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2020-10-14 23:56:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:29,772 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2020-10-14 23:56:29,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 23:56:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2020-10-14 23:56:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 23:56:29,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:29,772 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:29,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:56:29,772 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:29,773 INFO L82 PathProgramCache]: Analyzing trace with hash 256974659, now seen corresponding path program 56 times [2020-10-14 23:56:29,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:29,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624698570] [2020-10-14 23:56:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:30,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 23:56:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-14 23:56:30,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:30,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-14 23:56:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 23:56:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:31,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624698570] [2020-10-14 23:56:31,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:31,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-14 23:56:31,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676502054] [2020-10-14 23:56:31,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-14 23:56:31,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:31,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-14 23:56:31,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:56:31,980 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 59 states. [2020-10-14 23:56:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:32,172 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2020-10-14 23:56:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 23:56:32,172 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 122 [2020-10-14 23:56:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:32,173 INFO L225 Difference]: With dead ends: 131 [2020-10-14 23:56:32,174 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:56:32,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 23:56:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:56:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-14 23:56:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 23:56:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2020-10-14 23:56:32,178 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2020-10-14 23:56:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:32,178 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2020-10-14 23:56:32,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-14 23:56:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2020-10-14 23:56:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 23:56:32,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:32,179 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:32,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:56:32,179 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:32,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1020094847, now seen corresponding path program 57 times [2020-10-14 23:56:32,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:32,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139169913] [2020-10-14 23:56:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 23:56:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:34,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139169913] [2020-10-14 23:56:34,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:34,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-14 23:56:34,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32441565] [2020-10-14 23:56:34,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-14 23:56:34,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-14 23:56:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 23:56:34,494 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 60 states. [2020-10-14 23:56:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:34,729 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2020-10-14 23:56:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 23:56:34,730 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 124 [2020-10-14 23:56:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:34,730 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:56:34,731 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 23:56:34,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 23:56:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 23:56:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-14 23:56:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 23:56:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2020-10-14 23:56:34,735 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2020-10-14 23:56:34,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:34,735 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2020-10-14 23:56:34,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-14 23:56:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2020-10-14 23:56:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 23:56:34,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:34,736 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:34,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:56:34,736 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:34,737 INFO L82 PathProgramCache]: Analyzing trace with hash 76756543, now seen corresponding path program 58 times [2020-10-14 23:56:34,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397875099] [2020-10-14 23:56:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:35,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 23:56:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:56:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:37,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:37,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:37,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397875099] [2020-10-14 23:56:37,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:37,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-14 23:56:37,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431145711] [2020-10-14 23:56:37,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-14 23:56:37,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-14 23:56:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 23:56:37,173 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 61 states. [2020-10-14 23:56:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:37,388 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-10-14 23:56:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 23:56:37,389 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 126 [2020-10-14 23:56:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:37,390 INFO L225 Difference]: With dead ends: 135 [2020-10-14 23:56:37,390 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 23:56:37,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 23:56:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 23:56:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 23:56:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 23:56:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2020-10-14 23:56:37,393 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2020-10-14 23:56:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:37,394 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2020-10-14 23:56:37,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-14 23:56:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2020-10-14 23:56:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 23:56:37,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:37,395 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:37,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:56:37,395 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1883954813, now seen corresponding path program 59 times [2020-10-14 23:56:37,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:37,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491493156] [2020-10-14 23:56:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-14 23:56:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 23:56:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:39,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491493156] [2020-10-14 23:56:39,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:39,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-14 23:56:39,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656541556] [2020-10-14 23:56:39,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-14 23:56:39,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:39,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-14 23:56:39,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 23:56:39,942 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 62 states. [2020-10-14 23:56:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:40,181 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2020-10-14 23:56:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 23:56:40,182 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 128 [2020-10-14 23:56:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:40,182 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:56:40,182 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 23:56:40,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 23:56:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 23:56:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-14 23:56:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 23:56:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-10-14 23:56:40,186 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2020-10-14 23:56:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:40,186 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-10-14 23:56:40,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-14 23:56:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-10-14 23:56:40,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 23:56:40,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:40,187 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:40,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:56:40,188 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:40,188 INFO L82 PathProgramCache]: Analyzing trace with hash -860262597, now seen corresponding path program 60 times [2020-10-14 23:56:40,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:40,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806373534] [2020-10-14 23:56:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:40,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 23:56:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 23:56:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:42,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:42,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806373534] [2020-10-14 23:56:42,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-14 23:56:42,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950134539] [2020-10-14 23:56:42,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-14 23:56:42,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:42,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-14 23:56:42,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 23:56:42,777 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 63 states. [2020-10-14 23:56:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:43,001 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2020-10-14 23:56:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 23:56:43,001 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 130 [2020-10-14 23:56:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:43,003 INFO L225 Difference]: With dead ends: 139 [2020-10-14 23:56:43,003 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 23:56:43,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 23:56:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 23:56:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-14 23:56:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 23:56:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2020-10-14 23:56:43,008 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2020-10-14 23:56:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:43,008 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2020-10-14 23:56:43,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-14 23:56:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2020-10-14 23:56:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 23:56:43,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:43,009 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:43,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:56:43,009 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash -943273863, now seen corresponding path program 61 times [2020-10-14 23:56:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285379889] [2020-10-14 23:56:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:43,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 23:56:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:56:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:45,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285379889] [2020-10-14 23:56:45,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:45,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-14 23:56:45,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602651617] [2020-10-14 23:56:45,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-14 23:56:45,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-14 23:56:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 23:56:45,694 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 64 states. [2020-10-14 23:56:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:45,909 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2020-10-14 23:56:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 23:56:45,910 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 132 [2020-10-14 23:56:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:45,911 INFO L225 Difference]: With dead ends: 141 [2020-10-14 23:56:45,911 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 23:56:45,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 23:56:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 23:56:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-14 23:56:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 23:56:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2020-10-14 23:56:45,914 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2020-10-14 23:56:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:45,914 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2020-10-14 23:56:45,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-14 23:56:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2020-10-14 23:56:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:56:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:45,915 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:45,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:56:45,915 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash 887278135, now seen corresponding path program 62 times [2020-10-14 23:56:45,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:45,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055000757] [2020-10-14 23:56:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 23:56:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 23:56:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:48,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055000757] [2020-10-14 23:56:48,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:48,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-14 23:56:48,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138989143] [2020-10-14 23:56:48,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-14 23:56:48,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:48,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-14 23:56:48,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 23:56:48,708 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 65 states. [2020-10-14 23:56:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:48,964 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2020-10-14 23:56:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 23:56:48,965 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 134 [2020-10-14 23:56:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:48,966 INFO L225 Difference]: With dead ends: 143 [2020-10-14 23:56:48,966 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:56:48,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 23:56:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:56:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-14 23:56:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 23:56:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2020-10-14 23:56:48,970 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2020-10-14 23:56:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:48,970 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2020-10-14 23:56:48,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-14 23:56:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2020-10-14 23:56:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 23:56:48,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:48,972 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:48,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:56:48,972 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -888843147, now seen corresponding path program 63 times [2020-10-14 23:56:48,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:48,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307703495] [2020-10-14 23:56:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:49,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-14 23:56:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:56:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:52,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:52,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:52,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:52,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307703495] [2020-10-14 23:56:52,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:52,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-14 23:56:52,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851285138] [2020-10-14 23:56:52,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-14 23:56:52,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-14 23:56:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 23:56:52,042 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 66 states. [2020-10-14 23:56:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:52,296 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2020-10-14 23:56:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 23:56:52,296 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 136 [2020-10-14 23:56:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:52,298 INFO L225 Difference]: With dead ends: 145 [2020-10-14 23:56:52,298 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 23:56:52,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 23:56:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 23:56:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-14 23:56:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 23:56:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2020-10-14 23:56:52,302 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2020-10-14 23:56:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:52,303 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2020-10-14 23:56:52,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-14 23:56:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2020-10-14 23:56:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 23:56:52,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:52,304 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:52,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:56:52,304 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:52,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1655588659, now seen corresponding path program 64 times [2020-10-14 23:56:52,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:52,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006069499] [2020-10-14 23:56:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 23:56:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-14 23:56:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:52,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 23:56:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 23:56:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:55,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006069499] [2020-10-14 23:56:55,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:55,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-14 23:56:55,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751716954] [2020-10-14 23:56:55,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-14 23:56:55,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:55,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-14 23:56:55,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 23:56:55,393 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 67 states. [2020-10-14 23:56:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:55,663 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2020-10-14 23:56:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 23:56:55,664 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 138 [2020-10-14 23:56:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:55,665 INFO L225 Difference]: With dead ends: 147 [2020-10-14 23:56:55,665 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 23:56:55,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 23:56:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 23:56:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-14 23:56:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 23:56:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-10-14 23:56:55,668 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2020-10-14 23:56:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:55,668 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-10-14 23:56:55,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-14 23:56:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-10-14 23:56:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 23:56:55,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:55,670 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:55,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:56:55,670 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1276804495, now seen corresponding path program 65 times [2020-10-14 23:56:55,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:55,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626452147] [2020-10-14 23:56:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:56,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 23:56:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:58,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626452147] [2020-10-14 23:56:58,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:58,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 23:56:58,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263852831] [2020-10-14 23:56:58,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 23:56:58,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:58,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 23:56:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 23:56:58,796 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 68 states. [2020-10-14 23:56:59,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:59,060 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2020-10-14 23:56:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 23:56:59,060 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 140 [2020-10-14 23:56:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:59,061 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:56:59,061 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 23:56:59,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 23:56:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 23:56:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-14 23:56:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:56:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2020-10-14 23:56:59,064 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2020-10-14 23:56:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:59,064 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2020-10-14 23:56:59,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 23:56:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2020-10-14 23:56:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 23:56:59,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:59,065 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:59,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:56:59,065 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1808079313, now seen corresponding path program 66 times [2020-10-14 23:56:59,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:59,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91903715] [2020-10-14 23:56:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 23:56:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 23:56:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:02,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:02,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:02,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:02,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91903715] [2020-10-14 23:57:02,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:02,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-14 23:57:02,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998489306] [2020-10-14 23:57:02,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-14 23:57:02,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:02,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-14 23:57:02,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 23:57:02,269 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 69 states. [2020-10-14 23:57:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:02,547 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2020-10-14 23:57:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 23:57:02,547 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 142 [2020-10-14 23:57:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:02,548 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:57:02,548 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 23:57:02,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 23:57:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 23:57:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-14 23:57:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 23:57:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2020-10-14 23:57:02,551 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2020-10-14 23:57:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:02,551 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2020-10-14 23:57:02,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-14 23:57:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2020-10-14 23:57:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 23:57:02,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:02,552 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:02,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:57:02,553 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1262071187, now seen corresponding path program 67 times [2020-10-14 23:57:02,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:02,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134327908] [2020-10-14 23:57:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-14 23:57:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 23:57:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:05,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:05,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134327908] [2020-10-14 23:57:05,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:05,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-14 23:57:05,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045853744] [2020-10-14 23:57:05,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-14 23:57:05,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-14 23:57:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 23:57:05,855 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 70 states. [2020-10-14 23:57:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:06,136 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-10-14 23:57:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-14 23:57:06,136 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 144 [2020-10-14 23:57:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:06,137 INFO L225 Difference]: With dead ends: 153 [2020-10-14 23:57:06,138 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 23:57:06,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 23:57:06,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 23:57:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-14 23:57:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 23:57:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2020-10-14 23:57:06,142 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2020-10-14 23:57:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:06,142 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2020-10-14 23:57:06,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-14 23:57:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2020-10-14 23:57:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 23:57:06,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:06,143 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:06,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:57:06,143 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:06,143 INFO L82 PathProgramCache]: Analyzing trace with hash -534272213, now seen corresponding path program 68 times [2020-10-14 23:57:06,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:06,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720726240] [2020-10-14 23:57:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 23:57:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-14 23:57:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:07,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-14 23:57:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 23:57:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:10,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:10,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:10,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720726240] [2020-10-14 23:57:10,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:10,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-14 23:57:10,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423519377] [2020-10-14 23:57:10,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-14 23:57:10,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:10,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-14 23:57:10,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 23:57:10,066 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 71 states. [2020-10-14 23:57:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:10,352 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2020-10-14 23:57:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-14 23:57:10,352 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 146 [2020-10-14 23:57:10,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:10,353 INFO L225 Difference]: With dead ends: 155 [2020-10-14 23:57:10,354 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 23:57:10,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 23:57:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 23:57:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-14 23:57:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 23:57:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-10-14 23:57:10,358 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2020-10-14 23:57:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:10,358 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-10-14 23:57:10,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-14 23:57:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-10-14 23:57:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 23:57:10,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:10,360 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:10,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:57:10,360 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1199127447, now seen corresponding path program 69 times [2020-10-14 23:57:10,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:10,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960226220] [2020-10-14 23:57:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:11,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 23:57:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:13,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960226220] [2020-10-14 23:57:13,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:13,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-14 23:57:13,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052135434] [2020-10-14 23:57:13,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-14 23:57:13,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:13,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-14 23:57:13,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 23:57:13,854 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 72 states. [2020-10-14 23:57:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:14,166 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2020-10-14 23:57:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 23:57:14,166 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 148 [2020-10-14 23:57:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:14,167 INFO L225 Difference]: With dead ends: 157 [2020-10-14 23:57:14,167 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 23:57:14,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 23:57:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 23:57:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-14 23:57:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:57:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2020-10-14 23:57:14,172 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2020-10-14 23:57:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:14,172 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2020-10-14 23:57:14,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-14 23:57:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2020-10-14 23:57:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 23:57:14,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:14,174 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:14,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:57:14,174 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash -174880217, now seen corresponding path program 70 times [2020-10-14 23:57:14,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:14,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547158638] [2020-10-14 23:57:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:15,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:15,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 23:57:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 23:57:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:17,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:17,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:17,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547158638] [2020-10-14 23:57:17,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:17,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-14 23:57:17,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242943381] [2020-10-14 23:57:17,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-14 23:57:17,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:17,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-14 23:57:17,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 23:57:17,928 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 73 states. [2020-10-14 23:57:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:18,193 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2020-10-14 23:57:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-14 23:57:18,194 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 150 [2020-10-14 23:57:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:18,195 INFO L225 Difference]: With dead ends: 159 [2020-10-14 23:57:18,196 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 23:57:18,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 23:57:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 23:57:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-14 23:57:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:57:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2020-10-14 23:57:18,200 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2020-10-14 23:57:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:18,200 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2020-10-14 23:57:18,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-14 23:57:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2020-10-14 23:57:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 23:57:18,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:18,201 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:18,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:57:18,201 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash 579197029, now seen corresponding path program 71 times [2020-10-14 23:57:18,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:18,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165267738] [2020-10-14 23:57:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 23:57:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-10-14 23:57:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:19,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-14 23:57:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 23:57:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:22,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:22,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165267738] [2020-10-14 23:57:22,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:22,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-14 23:57:22,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465122891] [2020-10-14 23:57:22,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-14 23:57:22,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:22,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-14 23:57:22,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 23:57:22,039 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 74 states. [2020-10-14 23:57:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:22,316 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2020-10-14 23:57:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-14 23:57:22,317 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 152 [2020-10-14 23:57:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:22,318 INFO L225 Difference]: With dead ends: 161 [2020-10-14 23:57:22,318 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 23:57:22,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 23:57:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 23:57:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-10-14 23:57:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 23:57:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2020-10-14 23:57:22,322 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2020-10-14 23:57:22,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:22,323 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2020-10-14 23:57:22,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-14 23:57:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2020-10-14 23:57:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 23:57:22,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:22,324 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:22,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:57:22,324 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash -602042589, now seen corresponding path program 72 times [2020-10-14 23:57:22,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:22,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673911419] [2020-10-14 23:57:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-14 23:57:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 23:57:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:26,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:26,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:26,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673911419] [2020-10-14 23:57:26,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:26,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-14 23:57:26,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129723885] [2020-10-14 23:57:26,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-14 23:57:26,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-14 23:57:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 23:57:26,289 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 75 states. [2020-10-14 23:57:26,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:26,615 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-10-14 23:57:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-14 23:57:26,616 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 154 [2020-10-14 23:57:26,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:26,617 INFO L225 Difference]: With dead ends: 163 [2020-10-14 23:57:26,617 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 23:57:26,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 23:57:26,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 23:57:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-14 23:57:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 23:57:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2020-10-14 23:57:26,621 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2020-10-14 23:57:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:26,621 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2020-10-14 23:57:26,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-14 23:57:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2020-10-14 23:57:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 23:57:26,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:26,622 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:26,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:57:26,622 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:26,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1901949343, now seen corresponding path program 73 times [2020-10-14 23:57:26,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:26,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438004770] [2020-10-14 23:57:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:27,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 23:57:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:30,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:30,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:30,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:30,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438004770] [2020-10-14 23:57:30,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:30,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-14 23:57:30,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147334122] [2020-10-14 23:57:30,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-14 23:57:30,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:30,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-14 23:57:30,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 23:57:30,680 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 76 states. [2020-10-14 23:57:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:30,998 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2020-10-14 23:57:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-14 23:57:30,999 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 156 [2020-10-14 23:57:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:31,000 INFO L225 Difference]: With dead ends: 165 [2020-10-14 23:57:31,001 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 23:57:31,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 23:57:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 23:57:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2020-10-14 23:57:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 23:57:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2020-10-14 23:57:31,005 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2020-10-14 23:57:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:31,006 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2020-10-14 23:57:31,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-14 23:57:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2020-10-14 23:57:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 23:57:31,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:31,007 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:31,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:57:31,008 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1276856801, now seen corresponding path program 74 times [2020-10-14 23:57:31,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7451107] [2020-10-14 23:57:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-14 23:57:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 23:57:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:35,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:35,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:35,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:35,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7451107] [2020-10-14 23:57:35,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:35,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-14 23:57:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563929488] [2020-10-14 23:57:35,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-14 23:57:35,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:35,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-14 23:57:35,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 23:57:35,259 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 77 states. [2020-10-14 23:57:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:35,575 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2020-10-14 23:57:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-14 23:57:35,576 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 158 [2020-10-14 23:57:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:35,577 INFO L225 Difference]: With dead ends: 167 [2020-10-14 23:57:35,577 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 23:57:35,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 23:57:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 23:57:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 23:57:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 23:57:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-10-14 23:57:35,581 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2020-10-14 23:57:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:35,581 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-10-14 23:57:35,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-14 23:57:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-10-14 23:57:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 23:57:35,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:35,582 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:35,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 23:57:35,582 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1858345379, now seen corresponding path program 75 times [2020-10-14 23:57:35,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:35,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194203592] [2020-10-14 23:57:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:36,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 23:57:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 23:57:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:39,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:39,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194203592] [2020-10-14 23:57:39,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:39,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-14 23:57:39,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495662272] [2020-10-14 23:57:39,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-14 23:57:39,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:39,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-14 23:57:39,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 23:57:39,929 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 78 states. [2020-10-14 23:57:40,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:40,290 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2020-10-14 23:57:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-14 23:57:40,290 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 160 [2020-10-14 23:57:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:40,291 INFO L225 Difference]: With dead ends: 169 [2020-10-14 23:57:40,291 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 23:57:40,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 23:57:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 23:57:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-14 23:57:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 23:57:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2020-10-14 23:57:40,295 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2020-10-14 23:57:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:40,296 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2020-10-14 23:57:40,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-14 23:57:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2020-10-14 23:57:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 23:57:40,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:40,297 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:40,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 23:57:40,298 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1971846939, now seen corresponding path program 76 times [2020-10-14 23:57:40,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:40,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525932650] [2020-10-14 23:57:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-14 23:57:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 23:57:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:44,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:44,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:44,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:44,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:44,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:44,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525932650] [2020-10-14 23:57:44,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:44,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-14 23:57:44,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239195317] [2020-10-14 23:57:44,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-14 23:57:44,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-14 23:57:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 23:57:44,876 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 79 states. [2020-10-14 23:57:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:45,205 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-10-14 23:57:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-14 23:57:45,206 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 162 [2020-10-14 23:57:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:45,207 INFO L225 Difference]: With dead ends: 171 [2020-10-14 23:57:45,207 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 23:57:45,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 23:57:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 23:57:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-14 23:57:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:57:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2020-10-14 23:57:45,210 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2020-10-14 23:57:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:45,210 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2020-10-14 23:57:45,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-14 23:57:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2020-10-14 23:57:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 23:57:45,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:45,211 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:45,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 23:57:45,212 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1999691865, now seen corresponding path program 77 times [2020-10-14 23:57:45,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:45,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21552142] [2020-10-14 23:57:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:46,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:46,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 23:57:46,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-14 23:57:46,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:46,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 79 [2020-10-14 23:57:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 23:57:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:49,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:49,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21552142] [2020-10-14 23:57:49,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:49,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-14 23:57:49,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406606497] [2020-10-14 23:57:49,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-14 23:57:49,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:49,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-14 23:57:49,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 23:57:49,902 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 80 states. [2020-10-14 23:57:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:50,233 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2020-10-14 23:57:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-14 23:57:50,233 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 164 [2020-10-14 23:57:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:50,235 INFO L225 Difference]: With dead ends: 173 [2020-10-14 23:57:50,235 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 23:57:50,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 23:57:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 23:57:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-14 23:57:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 23:57:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-10-14 23:57:50,240 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2020-10-14 23:57:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:50,240 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-10-14 23:57:50,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-14 23:57:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-10-14 23:57:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 23:57:50,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:50,242 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:50,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 23:57:50,242 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1306105321, now seen corresponding path program 78 times [2020-10-14 23:57:50,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:50,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171640413] [2020-10-14 23:57:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:51,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:51,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 80 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 23:57:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:55,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:55,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171640413] [2020-10-14 23:57:55,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:55,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-14 23:57:55,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431794211] [2020-10-14 23:57:55,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-14 23:57:55,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-14 23:57:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 23:57:55,251 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 81 states. [2020-10-14 23:57:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:55,636 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2020-10-14 23:57:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-14 23:57:55,636 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 166 [2020-10-14 23:57:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:55,637 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:57:55,637 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:57:55,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 23:57:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:57:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-14 23:57:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:57:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2020-10-14 23:57:55,642 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2020-10-14 23:57:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:55,642 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2020-10-14 23:57:55,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-14 23:57:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2020-10-14 23:57:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 23:57:55,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:55,643 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:55,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 23:57:55,644 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:55,644 INFO L82 PathProgramCache]: Analyzing trace with hash 98597973, now seen corresponding path program 79 times [2020-10-14 23:57:55,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:55,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098191119] [2020-10-14 23:57:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 23:57:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-14 23:57:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 81 [2020-10-14 23:57:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 23:57:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:00,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:00,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:00,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:00,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:00,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098191119] [2020-10-14 23:58:00,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:00,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-14 23:58:00,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446976133] [2020-10-14 23:58:00,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-14 23:58:00,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-14 23:58:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 23:58:00,556 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 82 states. [2020-10-14 23:58:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:00,906 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2020-10-14 23:58:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-14 23:58:00,907 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 168 [2020-10-14 23:58:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:00,908 INFO L225 Difference]: With dead ends: 177 [2020-10-14 23:58:00,908 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 23:58:00,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 23:58:00,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 23:58:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-14 23:58:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 23:58:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2020-10-14 23:58:00,914 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2020-10-14 23:58:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:00,915 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2020-10-14 23:58:00,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-14 23:58:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2020-10-14 23:58:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 23:58:00,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:00,916 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:00,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 23:58:00,916 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:00,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1398732563, now seen corresponding path program 80 times [2020-10-14 23:58:00,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:00,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590968285] [2020-10-14 23:58:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:02,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 23:58:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:06,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:06,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:06,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590968285] [2020-10-14 23:58:06,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:06,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-10-14 23:58:06,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371867010] [2020-10-14 23:58:06,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-10-14 23:58:06,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:06,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-10-14 23:58:06,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 23:58:06,103 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 83 states. [2020-10-14 23:58:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:06,502 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2020-10-14 23:58:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-14 23:58:06,504 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 170 [2020-10-14 23:58:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:06,505 INFO L225 Difference]: With dead ends: 179 [2020-10-14 23:58:06,506 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 23:58:06,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 23:58:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 23:58:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 23:58:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 23:58:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2020-10-14 23:58:06,514 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2020-10-14 23:58:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:06,515 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2020-10-14 23:58:06,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-10-14 23:58:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2020-10-14 23:58:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 23:58:06,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:06,517 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:06,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 23:58:06,518 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:06,518 INFO L82 PathProgramCache]: Analyzing trace with hash 992590417, now seen corresponding path program 81 times [2020-10-14 23:58:06,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:06,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064511874] [2020-10-14 23:58:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1994 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 83 [2020-10-14 23:58:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 23:58:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:12,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:12,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:12,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064511874] [2020-10-14 23:58:12,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:12,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-14 23:58:12,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102816259] [2020-10-14 23:58:12,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-14 23:58:12,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:12,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-14 23:58:12,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-14 23:58:12,789 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 84 states. [2020-10-14 23:58:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:13,203 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2020-10-14 23:58:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-14 23:58:13,204 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 172 [2020-10-14 23:58:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:13,205 INFO L225 Difference]: With dead ends: 181 [2020-10-14 23:58:13,205 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:58:13,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-14 23:58:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:58:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-14 23:58:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:58:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2020-10-14 23:58:13,210 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2020-10-14 23:58:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:13,211 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2020-10-14 23:58:13,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-14 23:58:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2020-10-14 23:58:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 23:58:13,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:13,212 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:13,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 23:58:13,213 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:13,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:13,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1532012047, now seen corresponding path program 82 times [2020-10-14 23:58:13,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:13,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743377262] [2020-10-14 23:58:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:14,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-14 23:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 23:58:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:18,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:18,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:18,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743377262] [2020-10-14 23:58:18,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:18,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-10-14 23:58:18,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197866834] [2020-10-14 23:58:18,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-10-14 23:58:18,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-10-14 23:58:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 23:58:18,808 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 85 states. [2020-10-14 23:58:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:19,259 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2020-10-14 23:58:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-14 23:58:19,260 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 174 [2020-10-14 23:58:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:19,261 INFO L225 Difference]: With dead ends: 183 [2020-10-14 23:58:19,261 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 23:58:19,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 23:58:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 23:58:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-14 23:58:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 23:58:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2020-10-14 23:58:19,267 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2020-10-14 23:58:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:19,267 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2020-10-14 23:58:19,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-10-14 23:58:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2020-10-14 23:58:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 23:58:19,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:19,269 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:19,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 23:58:19,269 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash 225155661, now seen corresponding path program 83 times [2020-10-14 23:58:19,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:19,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153099769] [2020-10-14 23:58:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:20,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-14 23:58:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 23:58:20,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:24,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153099769] [2020-10-14 23:58:24,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:24,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-14 23:58:24,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213543550] [2020-10-14 23:58:24,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-14 23:58:24,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:24,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-14 23:58:24,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-14 23:58:24,910 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 86 states. [2020-10-14 23:58:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:25,349 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2020-10-14 23:58:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-14 23:58:25,350 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 176 [2020-10-14 23:58:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:25,351 INFO L225 Difference]: With dead ends: 185 [2020-10-14 23:58:25,351 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 23:58:25,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-14 23:58:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 23:58:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2020-10-14 23:58:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 23:58:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2020-10-14 23:58:25,355 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2020-10-14 23:58:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:25,355 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2020-10-14 23:58:25,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-14 23:58:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2020-10-14 23:58:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 23:58:25,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:25,357 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:25,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 23:58:25,357 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:25,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1533380853, now seen corresponding path program 84 times [2020-10-14 23:58:25,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:25,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675294853] [2020-10-14 23:58:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-14 23:58:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 23:58:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:31,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:31,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:31,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:31,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675294853] [2020-10-14 23:58:31,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:31,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-14 23:58:31,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831715529] [2020-10-14 23:58:31,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-14 23:58:31,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:31,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-14 23:58:31,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 23:58:31,184 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 87 states. [2020-10-14 23:58:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:31,665 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2020-10-14 23:58:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-14 23:58:31,666 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 178 [2020-10-14 23:58:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:31,667 INFO L225 Difference]: With dead ends: 187 [2020-10-14 23:58:31,667 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 23:58:31,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 23:58:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 23:58:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2020-10-14 23:58:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:58:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2020-10-14 23:58:31,672 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2020-10-14 23:58:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:31,672 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2020-10-14 23:58:31,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-10-14 23:58:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2020-10-14 23:58:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 23:58:31,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:31,674 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:31,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-14 23:58:31,674 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 730143817, now seen corresponding path program 85 times [2020-10-14 23:58:31,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:31,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516911506] [2020-10-14 23:58:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 87 [2020-10-14 23:58:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 23:58:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:58:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:37,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:37,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:37,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:37,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516911506] [2020-10-14 23:58:37,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:37,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-14 23:58:37,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134728032] [2020-10-14 23:58:37,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-14 23:58:37,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-14 23:58:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-14 23:58:37,781 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 88 states. [2020-10-14 23:58:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:38,281 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-10-14 23:58:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-14 23:58:38,282 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 180 [2020-10-14 23:58:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:38,283 INFO L225 Difference]: With dead ends: 189 [2020-10-14 23:58:38,283 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 23:58:38,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-14 23:58:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 23:58:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-10-14 23:58:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 23:58:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2020-10-14 23:58:38,289 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2020-10-14 23:58:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:38,290 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2020-10-14 23:58:38,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-14 23:58:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2020-10-14 23:58:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 23:58:38,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:38,291 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:38,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-14 23:58:38,291 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1571067385, now seen corresponding path program 86 times [2020-10-14 23:58:38,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:38,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443942462] [2020-10-14 23:58:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:39,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:39,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 23:58:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-14 23:58:39,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:39,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-14 23:58:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 23:58:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:44,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:44,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:44,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:44,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:44,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:44,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443942462] [2020-10-14 23:58:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:44,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-10-14 23:58:44,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671828498] [2020-10-14 23:58:44,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-10-14 23:58:44,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-10-14 23:58:44,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-14 23:58:44,662 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 89 states. [2020-10-14 23:58:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:45,169 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2020-10-14 23:58:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-14 23:58:45,169 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 182 [2020-10-14 23:58:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:45,170 INFO L225 Difference]: With dead ends: 191 [2020-10-14 23:58:45,171 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:58:45,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-14 23:58:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:58:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2020-10-14 23:58:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 23:58:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-10-14 23:58:45,175 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2020-10-14 23:58:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:45,175 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-10-14 23:58:45,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-10-14 23:58:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-10-14 23:58:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 23:58:45,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:45,177 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:45,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-14 23:58:45,177 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:45,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1126875067, now seen corresponding path program 87 times [2020-10-14 23:58:45,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:45,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384761564] [2020-10-14 23:58:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:46,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 89 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 23:58:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:51,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384761564] [2020-10-14 23:58:51,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:51,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-14 23:58:51,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860076582] [2020-10-14 23:58:51,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-14 23:58:51,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:51,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-14 23:58:51,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 23:58:51,594 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 90 states. [2020-10-14 23:58:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:52,077 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2020-10-14 23:58:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-10-14 23:58:52,077 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 184 [2020-10-14 23:58:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:52,078 INFO L225 Difference]: With dead ends: 193 [2020-10-14 23:58:52,078 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 23:58:52,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 23:58:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 23:58:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2020-10-14 23:58:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 23:58:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2020-10-14 23:58:52,082 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2020-10-14 23:58:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:52,083 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2020-10-14 23:58:52,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-14 23:58:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2020-10-14 23:58:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 23:58:52,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:52,084 INFO L422 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:52,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-14 23:58:52,084 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash 540180227, now seen corresponding path program 88 times [2020-10-14 23:58:52,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:52,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972391576] [2020-10-14 23:58:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 90 [2020-10-14 23:58:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:58:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 23:58:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:58:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:58:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:58:58,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:58:58,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:58:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:58:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:58:58,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:58:58,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:58:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:58:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:58:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:58:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:58:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:58:58,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972391576] [2020-10-14 23:58:58,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:58:58,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-10-14 23:58:58,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512904691] [2020-10-14 23:58:58,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-10-14 23:58:58,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:58:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-10-14 23:58:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 23:58:58,675 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 91 states. [2020-10-14 23:58:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:58:59,096 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2020-10-14 23:58:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-14 23:58:59,097 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 186 [2020-10-14 23:58:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:58:59,098 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:58:59,098 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:58:59,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 23:58:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:58:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-10-14 23:58:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 23:58:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2020-10-14 23:58:59,102 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2020-10-14 23:58:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:58:59,102 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2020-10-14 23:58:59,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-10-14 23:58:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2020-10-14 23:58:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 23:58:59,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:58:59,103 INFO L422 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:58:59,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-14 23:58:59,103 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:58:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:58:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash 557516353, now seen corresponding path program 89 times [2020-10-14 23:58:59,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:58:59,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658649943] [2020-10-14 23:58:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:58:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:58:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 23:59:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:59:05,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:59:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:05,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:05,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:59:05,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:59:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:05,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:59:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:59:05,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:59:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:59:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:59:05,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658649943] [2020-10-14 23:59:05,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:59:05,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-14 23:59:05,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601540073] [2020-10-14 23:59:05,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-14 23:59:05,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:59:05,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-14 23:59:05,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-10-14 23:59:05,821 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 92 states. [2020-10-14 23:59:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:59:06,361 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2020-10-14 23:59:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-14 23:59:06,362 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 188 [2020-10-14 23:59:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:59:06,363 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:59:06,363 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 23:59:06,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-10-14 23:59:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 23:59:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2020-10-14 23:59:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:59:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2020-10-14 23:59:06,368 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2020-10-14 23:59:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:59:06,368 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2020-10-14 23:59:06,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-10-14 23:59:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2020-10-14 23:59:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 23:59:06,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:59:06,370 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:59:06,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-14 23:59:06,370 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:59:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:59:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 37664255, now seen corresponding path program 90 times [2020-10-14 23:59:06,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:59:06,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536371299] [2020-10-14 23:59:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:59:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:07,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:07,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 23:59:07,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-14 23:59:07,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:07,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-14 23:59:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:59:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 23:59:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:59:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:59:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:13,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:13,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:59:13,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:59:13,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:13,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:59:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:59:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:59:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:59:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:59:13,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536371299] [2020-10-14 23:59:13,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:59:13,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-10-14 23:59:13,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106035393] [2020-10-14 23:59:13,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-10-14 23:59:13,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:59:13,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-10-14 23:59:13,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-10-14 23:59:13,290 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 93 states. [2020-10-14 23:59:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:59:13,809 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2020-10-14 23:59:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-14 23:59:13,809 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 190 [2020-10-14 23:59:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:59:13,810 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:59:13,811 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:59:13,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-10-14 23:59:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:59:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-14 23:59:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 23:59:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2020-10-14 23:59:13,815 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2020-10-14 23:59:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:59:13,816 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2020-10-14 23:59:13,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-10-14 23:59:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2020-10-14 23:59:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 23:59:13,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:59:13,817 INFO L422 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:59:13,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-14 23:59:13,817 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:59:13,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:59:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1323995587, now seen corresponding path program 91 times [2020-10-14 23:59:13,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:59:13,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600881882] [2020-10-14 23:59:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:59:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 23:59:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1484 [2020-10-14 23:59:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:15,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 93 [2020-10-14 23:59:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:59:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 23:59:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:59:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:59:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:20,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:59:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:59:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:59:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:59:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:59:20,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600881882] [2020-10-14 23:59:20,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:59:20,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-10-14 23:59:20,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401930029] [2020-10-14 23:59:20,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-10-14 23:59:20,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:59:20,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-10-14 23:59:20,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-10-14 23:59:20,873 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 94 states. [2020-10-14 23:59:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:59:21,290 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2020-10-14 23:59:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-14 23:59:21,291 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 192 [2020-10-14 23:59:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:59:21,293 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:59:21,293 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 23:59:21,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-10-14 23:59:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 23:59:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-10-14 23:59:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 23:59:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2020-10-14 23:59:21,297 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2020-10-14 23:59:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:59:21,297 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2020-10-14 23:59:21,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-10-14 23:59:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2020-10-14 23:59:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 23:59:21,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:59:21,299 INFO L422 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:59:21,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-14 23:59:21,299 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:59:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:59:21,299 INFO L82 PathProgramCache]: Analyzing trace with hash 85921531, now seen corresponding path program 92 times [2020-10-14 23:59:21,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:59:21,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040711053] [2020-10-14 23:59:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:59:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:59:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:59:22,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:59:22,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 23:59:22,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 94 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 23:59:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0