/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapavg4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:14:48,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:14:48,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:14:48,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:14:48,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:14:48,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:14:48,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:14:48,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:14:48,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:14:48,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:14:48,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:14:48,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:14:48,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:14:48,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:14:48,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:14:48,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:14:48,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:14:48,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:14:48,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:14:48,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:14:48,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:14:48,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:14:48,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:14:48,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:14:48,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:14:48,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:14:48,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:14:48,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:14:48,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:14:48,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:14:48,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:14:48,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:14:48,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:14:48,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:14:48,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:14:48,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:14:48,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:14:48,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:14:48,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:14:48,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:14:48,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:14:48,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:14:48,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:14:48,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:14:48,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:14:48,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:14:48,616 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:14:48,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:14:48,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:14:48,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:14:48,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:14:48,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:14:48,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:14:48,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:14:48,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:14:48,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:14:48,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:14:48,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:14:48,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:14:48,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:14:48,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:14:48,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:14:48,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:14:48,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:48,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:14:48,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:14:48,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:14:48,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:14:48,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:14:48,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:14:48,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:14:48,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:14:48,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:14:48,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:14:48,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:14:48,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:14:48,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:14:48,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg4.i [2020-10-13 23:14:49,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1851232e6/6b7b037253554c68b042f14c4445bcae/FLAG939dd8ec8 [2020-10-13 23:14:49,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:14:49,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapavg4.i [2020-10-13 23:14:49,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1851232e6/6b7b037253554c68b042f14c4445bcae/FLAG939dd8ec8 [2020-10-13 23:14:49,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1851232e6/6b7b037253554c68b042f14c4445bcae [2020-10-13 23:14:49,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:14:49,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:14:49,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:49,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:14:49,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:14:49,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:49" (1/1) ... [2020-10-13 23:14:49,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:49, skipping insertion in model container [2020-10-13 23:14:49,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:49" (1/1) ... [2020-10-13 23:14:49,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:14:49,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:14:50,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:50,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:14:50,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:50,246 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:14:50,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50 WrapperNode [2020-10-13 23:14:50,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:50,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:14:50,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:14:50,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:14:50,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... [2020-10-13 23:14:50,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:14:50,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:14:50,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:14:50,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:14:50,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2020-10-13 23:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:14:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:14:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:14:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:14:50,739 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:14:50,739 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:14:50,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:50 BoogieIcfgContainer [2020-10-13 23:14:50,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:14:50,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:14:50,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:14:50,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:14:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:49" (1/3) ... [2020-10-13 23:14:50,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c2daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:50, skipping insertion in model container [2020-10-13 23:14:50,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:50" (2/3) ... [2020-10-13 23:14:50,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c2daf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:50, skipping insertion in model container [2020-10-13 23:14:50,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:50" (3/3) ... [2020-10-13 23:14:50,771 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg4.i [2020-10-13 23:14:50,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:14:50,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:14:50,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:14:50,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:14:50,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:14:50,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:14:50,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:14:50,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:14:50,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:14:50,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:14:50,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:14:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:14:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:50,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:50,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:50,879 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1234592251, now seen corresponding path program 1 times [2020-10-13 23:14:50,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:50,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58880842] [2020-10-13 23:14:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:52,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:52,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:14:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-13 23:14:52,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:52,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:14:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:14:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:52,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:52,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:52,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:14:52,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:52,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:52,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:14:52,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:52,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:14:52,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:52,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:52,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:14:52,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:52,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:14:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:52,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58880842] [2020-10-13 23:14:52,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:52,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:14:52,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929104126] [2020-10-13 23:14:52,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:14:52,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:14:52,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:52,762 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:14:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:52,891 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:14:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:14:52,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:14:52,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:52,902 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:14:52,902 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:14:52,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:14:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:14:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:14:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:14:52,951 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:14:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:52,951 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:14:52,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:14:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:14:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:52,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:52,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:52,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:14:52,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1054720325, now seen corresponding path program 1 times [2020-10-13 23:14:52,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:52,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396924985] [2020-10-13 23:14:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:14:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-13 23:14:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:54,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:14:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:54,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:54,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:54,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:54,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:54,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:14:54,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:54,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:54,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:54,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:54,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:54,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:14:54,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:54,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:54,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396924985] [2020-10-13 23:14:54,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:54,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:14:54,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468972337] [2020-10-13 23:14:54,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:54,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:54,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:54,464 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:14:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:54,543 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-13 23:14:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:54,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:14:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:54,545 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:14:54,546 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:14:54,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:14:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:14:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:14:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:14:54,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:14:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:54,557 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:14:54,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:14:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 23:14:54,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:54,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:54,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:14:54,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:54,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:54,560 INFO L82 PathProgramCache]: Analyzing trace with hash -50456519, now seen corresponding path program 1 times [2020-10-13 23:14:54,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:54,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549568142] [2020-10-13 23:14:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 23:14:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:14:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-10-13 23:14:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:14:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:14:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:56,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:56,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:14:56,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:14:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:14:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:14:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:14:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:56,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 23:14:56,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549568142] [2020-10-13 23:14:56,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:56,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:14:56,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912072662] [2020-10-13 23:14:56,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:14:56,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:56,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:14:56,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:14:56,792 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:14:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:56,906 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-13 23:14:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:14:56,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 23:14:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:56,908 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:14:56,908 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:14:56,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:14:56,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:14:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:14:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:14:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:14:56,926 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-13 23:14:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:56,927 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:14:56,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:14:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:14:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:14:56,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:56,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:56,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:14:56,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:56,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:56,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1220480489, now seen corresponding path program 1 times [2020-10-13 23:14:56,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:56,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567898524] [2020-10-13 23:14:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:01,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:15:01,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:15:01,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:01,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:01,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:01,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:01,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:01,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:02,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:02,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:15:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:15:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:15:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:02,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:02,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:15:02,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567898524] [2020-10-13 23:15:02,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:02,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:15:02,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667757033] [2020-10-13 23:15:02,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:02,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:02,099 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:15:02,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:02,191 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 23:15:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:02,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:15:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:02,192 INFO L225 Difference]: With dead ends: 50 [2020-10-13 23:15:02,192 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:15:02,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:15:02,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:15:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:15:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:15:02,200 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:15:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:02,200 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:15:02,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:15:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:15:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:02,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:02,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:15:02,203 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -490156423, now seen corresponding path program 1 times [2020-10-13 23:15:02,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:02,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204558351] [2020-10-13 23:15:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:15:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:15:07,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 23:15:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:07,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:07,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:07,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:15:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:15:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:07,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:07,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:07,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:07,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:15:07,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204558351] [2020-10-13 23:15:07,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:07,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:07,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843525782] [2020-10-13 23:15:07,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:07,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:07,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:07,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:07,376 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:15:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:07,515 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 23:15:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:07,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:15:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:07,517 INFO L225 Difference]: With dead ends: 51 [2020-10-13 23:15:07,517 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:15:07,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:15:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:15:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:15:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:15:07,531 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:15:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:07,531 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:15:07,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:15:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:15:07,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:07,534 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:07,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:15:07,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:07,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1347143593, now seen corresponding path program 2 times [2020-10-13 23:15:07,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:07,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828354088] [2020-10-13 23:15:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 23:15:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:12,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:15:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:12,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:15:12,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:15:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:12,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:15:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:15:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:12,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:12,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:12,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:12,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 23:15:12,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828354088] [2020-10-13 23:15:12,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:12,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:12,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314126780] [2020-10-13 23:15:12,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:12,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:12,738 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:15:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:12,872 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-13 23:15:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:12,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-13 23:15:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:12,873 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:15:12,873 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:15:12,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:15:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:15:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:15:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:15:12,880 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 23:15:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:12,881 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:15:12,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:15:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 23:15:12,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:12,882 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:12,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:15:12,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1748106315, now seen corresponding path program 3 times [2020-10-13 23:15:12,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:12,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108592806] [2020-10-13 23:15:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 23:15:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:15:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 23:15:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:17,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:17,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:17,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:18,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:18,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:15:18,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:18,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:15:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:18,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:18,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:15:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:15:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:18,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:18,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108592806] [2020-10-13 23:15:18,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:18,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:18,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596992285] [2020-10-13 23:15:18,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:18,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:18,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:18,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:18,130 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:15:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:18,268 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 23:15:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:18,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 23:15:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:18,270 INFO L225 Difference]: With dead ends: 53 [2020-10-13 23:15:18,270 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:15:18,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:15:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:15:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:15:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:15:18,285 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-13 23:15:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:18,286 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:15:18,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:15:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 23:15:18,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:18,289 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:18,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:15:18,290 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash 701873843, now seen corresponding path program 4 times [2020-10-13 23:15:18,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:18,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790272813] [2020-10-13 23:15:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 23:15:23,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 23:15:23,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 23:15:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:15:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:23,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:23,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:23,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:15:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:23,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:15:23,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:15:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:23,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 23:15:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:23,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 23:15:23,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790272813] [2020-10-13 23:15:23,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:23,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:23,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423508556] [2020-10-13 23:15:23,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:23,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:23,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:23,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:23,606 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:15:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:23,733 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-13 23:15:23,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:23,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 23:15:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:23,735 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:15:23,736 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:15:23,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:15:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:15:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:15:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:15:23,748 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-13 23:15:23,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:23,749 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:15:23,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:15:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:15:23,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:23,753 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:23,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:15:23,753 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1490727473, now seen corresponding path program 5 times [2020-10-13 23:15:23,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:23,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169246373] [2020-10-13 23:15:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:15:28,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:15:28,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:28,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:15:28,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:28,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:28,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:15:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:15:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:28,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 23:15:28,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169246373] [2020-10-13 23:15:28,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:28,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:28,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890699857] [2020-10-13 23:15:28,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:28,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:28,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:28,934 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:15:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:29,018 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 23:15:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:29,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:15:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:29,020 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:15:29,020 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:15:29,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:15:29,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:15:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:15:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:15:29,032 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:15:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:29,033 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:15:29,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:15:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:15:29,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:29,035 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:29,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:15:29,036 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:29,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2010970643, now seen corresponding path program 6 times [2020-10-13 23:15:29,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:29,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479483170] [2020-10-13 23:15:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:34,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:15:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:15:34,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:34,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:15:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:34,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:34,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:34,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:34,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:34,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:34,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:34,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:15:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:34,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:34,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:15:34,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:34,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:15:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:34,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:15:34,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479483170] [2020-10-13 23:15:34,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:34,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:34,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499223124] [2020-10-13 23:15:34,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:34,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:34,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:34,218 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:15:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:34,368 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-13 23:15:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:34,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:15:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:34,370 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:15:34,370 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:15:34,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:15:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:15:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:15:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:15:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:15:34,376 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:15:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:34,376 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:15:34,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:15:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:15:34,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:34,378 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:34,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:15:34,378 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash 505792113, now seen corresponding path program 7 times [2020-10-13 23:15:34,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:34,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800979724] [2020-10-13 23:15:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:15:39,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:39,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:39,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:39,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:39,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:39,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 23:15:39,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:15:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:15:39,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:15:39,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800979724] [2020-10-13 23:15:39,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:39,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:39,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88685023] [2020-10-13 23:15:39,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:39,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:39,569 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:15:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:39,656 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 23:15:39,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:39,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:15:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:39,658 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:15:39,658 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:15:39,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:15:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:15:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:15:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:15:39,664 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:15:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:39,664 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:15:39,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:15:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:15:39,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:39,665 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:39,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:15:39,666 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1521232495, now seen corresponding path program 8 times [2020-10-13 23:15:39,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:39,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732057254] [2020-10-13 23:15:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:15:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:15:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 23:15:44,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732057254] [2020-10-13 23:15:44,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:44,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:44,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338188410] [2020-10-13 23:15:44,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:44,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:44,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:44,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:44,830 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:15:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:44,922 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-13 23:15:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:44,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:15:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:44,924 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:15:44,924 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:15:44,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:15:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:15:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:15:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:15:44,937 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:15:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:44,940 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:15:44,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:15:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:15:44,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:44,941 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:44,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:15:44,942 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:44,942 INFO L82 PathProgramCache]: Analyzing trace with hash -22577199, now seen corresponding path program 9 times [2020-10-13 23:15:44,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:44,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063029358] [2020-10-13 23:15:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:15:49,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:15:49,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:15:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:49,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:49,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:50,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:50,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:15:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:50,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:15:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:50,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-13 23:15:50,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063029358] [2020-10-13 23:15:50,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:50,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:50,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567193151] [2020-10-13 23:15:50,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:50,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:50,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:50,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:50,119 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:15:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:50,293 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-13 23:15:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:50,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:15:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:50,295 INFO L225 Difference]: With dead ends: 79 [2020-10-13 23:15:50,295 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:15:50,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:15:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:15:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:15:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:15:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:15:50,302 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:15:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:50,302 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:15:50,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:15:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 23:15:50,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:50,303 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:50,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:15:50,304 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1928275119, now seen corresponding path program 10 times [2020-10-13 23:15:50,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:50,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047843816] [2020-10-13 23:15:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:15:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:55,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:55,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:55,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:55,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:15:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:55,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:55,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:15:55,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:55,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:15:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:15:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 23:15:55,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047843816] [2020-10-13 23:15:55,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:55,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:15:55,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629632167] [2020-10-13 23:15:55,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:15:55,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:55,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:15:55,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:55,508 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:15:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:55,710 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-13 23:15:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:15:55,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-13 23:15:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:55,711 INFO L225 Difference]: With dead ends: 83 [2020-10-13 23:15:55,711 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:15:55,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:15:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:15:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:15:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:15:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:15:55,717 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-13 23:15:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:55,717 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:15:55,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:15:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:15:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:15:55,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:55,718 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:55,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:15:55,719 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:55,719 INFO L82 PathProgramCache]: Analyzing trace with hash 829909773, now seen corresponding path program 11 times [2020-10-13 23:15:55,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:55,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918993458] [2020-10-13 23:15:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:16:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:00,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:16:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:00,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:16:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:00,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:16:00,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918993458] [2020-10-13 23:16:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:00,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:00,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736914315] [2020-10-13 23:16:00,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:00,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:00,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:00,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:00,947 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:16:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:01,071 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-10-13 23:16:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:01,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-13 23:16:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:01,074 INFO L225 Difference]: With dead ends: 75 [2020-10-13 23:16:01,074 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:16:01,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:16:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:16:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:16:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:16:01,093 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-13 23:16:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:01,094 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:16:01,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:16:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:16:01,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:01,097 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:01,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:16:01,097 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1124198411, now seen corresponding path program 12 times [2020-10-13 23:16:01,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:01,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90017175] [2020-10-13 23:16:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 23:16:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 23:16:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 23:16:06,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:06,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:16:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 23:16:06,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:06,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:06,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 23:16:06,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90017175] [2020-10-13 23:16:06,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:06,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:06,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061029065] [2020-10-13 23:16:06,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:06,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:06,497 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:16:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:06,654 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 23:16:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:06,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 23:16:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:06,655 INFO L225 Difference]: With dead ends: 77 [2020-10-13 23:16:06,655 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:16:06,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:16:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:16:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:16:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:16:06,671 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-13 23:16:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:06,671 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:16:06,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:16:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:16:06,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:06,673 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:06,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:16:06,674 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 467737993, now seen corresponding path program 13 times [2020-10-13 23:16:06,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:06,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399984664] [2020-10-13 23:16:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:16:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:16:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:11,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:11,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:11,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:16:11,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:11,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:16:11,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:16:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:16:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 23:16:11,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399984664] [2020-10-13 23:16:11,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:11,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:16:11,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680589846] [2020-10-13 23:16:11,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:16:11,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:11,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:16:11,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:16:11,974 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:16:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:12,117 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 23:16:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:16:12,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:16:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:12,119 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:16:12,119 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:16:12,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:16:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:16:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:16:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:16:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:16:12,136 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:16:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:12,136 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:16:12,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:16:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:16:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:16:12,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:12,142 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:12,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:16:12,143 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:12,143 INFO L82 PathProgramCache]: Analyzing trace with hash 617258603, now seen corresponding path program 14 times [2020-10-13 23:16:12,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:12,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988099330] [2020-10-13 23:16:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:16:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:16:17,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:17,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:17,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:17,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:16:17,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:17,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:16:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 23:16:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:16:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 23:16:17,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:17,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-13 23:16:17,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988099330] [2020-10-13 23:16:17,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:17,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:17,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959247915] [2020-10-13 23:16:17,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:17,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:17,483 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:16:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:17,700 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-13 23:16:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:17,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:16:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:17,702 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:16:17,702 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:16:17,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:16:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:16:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:16:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:16:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:16:17,712 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:16:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:17,713 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:16:17,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:16:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:16:17,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:17,714 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:17,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:16:17,714 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash 254010825, now seen corresponding path program 15 times [2020-10-13 23:16:17,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:17,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227911421] [2020-10-13 23:16:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:16:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:22,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:22,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-13 23:16:22,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227911421] [2020-10-13 23:16:22,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:22,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:22,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008987853] [2020-10-13 23:16:22,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:22,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:22,990 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:16:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:23,127 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 23:16:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:23,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 23:16:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:23,129 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:16:23,129 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:16:23,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:16:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:16:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:16:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:16:23,137 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-13 23:16:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:23,138 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:16:23,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:16:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:16:23,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:23,139 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:23,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:16:23,140 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:23,140 INFO L82 PathProgramCache]: Analyzing trace with hash 904989639, now seen corresponding path program 16 times [2020-10-13 23:16:23,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:23,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014797981] [2020-10-13 23:16:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:16:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:16:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 23:16:28,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014797981] [2020-10-13 23:16:28,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:28,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:28,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589505166] [2020-10-13 23:16:28,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:28,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:28,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:28,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:28,433 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:16:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:28,521 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 23:16:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:28,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:16:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:28,523 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:16:28,523 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:16:28,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:16:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:16:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:16:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:16:28,530 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:16:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:28,530 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:16:28,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:16:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:16:28,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:28,532 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:28,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:16:28,532 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1159701975, now seen corresponding path program 17 times [2020-10-13 23:16:28,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:28,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707964056] [2020-10-13 23:16:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:16:33,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:33,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:33,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:33,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:16:33,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:33,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:16:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:16:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:33,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:33,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-13 23:16:33,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707964056] [2020-10-13 23:16:33,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:33,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:33,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321153319] [2020-10-13 23:16:33,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:33,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:33,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:33,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:33,815 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:16:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:34,049 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 23:16:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:34,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:16:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:34,050 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:16:34,050 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:16:34,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:16:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:16:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:16:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:16:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:16:34,055 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:16:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:34,055 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:16:34,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:16:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:16:34,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:34,057 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:34,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:16:34,057 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:34,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash 873150983, now seen corresponding path program 18 times [2020-10-13 23:16:34,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:34,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352148935] [2020-10-13 23:16:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:16:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:39,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:39,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:16:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 23:16:39,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352148935] [2020-10-13 23:16:39,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:39,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:39,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014710308] [2020-10-13 23:16:39,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:39,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:39,365 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:16:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:39,495 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:16:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:39,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 23:16:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:39,499 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:16:39,499 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:16:39,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:16:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:16:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:16:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:16:39,504 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-13 23:16:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:39,505 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:16:39,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:16:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:16:39,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:39,506 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:39,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:16:39,506 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:39,507 INFO L82 PathProgramCache]: Analyzing trace with hash -925847419, now seen corresponding path program 19 times [2020-10-13 23:16:39,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:39,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098926251] [2020-10-13 23:16:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:44,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:44,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:16:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:16:44,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098926251] [2020-10-13 23:16:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456398559] [2020-10-13 23:16:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:44,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:44,794 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:16:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:44,894 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 23:16:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:44,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:16:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:44,895 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:16:44,896 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:16:44,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:16:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:16:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:16:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:16:44,902 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:16:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:44,902 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:16:44,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:16:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:16:44,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:44,903 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:44,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:16:44,904 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash -587010969, now seen corresponding path program 20 times [2020-10-13 23:16:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:44,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340428489] [2020-10-13 23:16:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:16:49,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:16:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:16:50,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340428489] [2020-10-13 23:16:50,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:50,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:50,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382989855] [2020-10-13 23:16:50,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:50,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:50,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:50,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:50,212 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:16:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:50,453 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 23:16:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:50,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:16:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:50,454 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:16:50,454 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:16:50,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:16:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:16:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:16:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:16:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:16:50,460 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:16:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:50,460 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:16:50,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:16:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:16:50,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:50,462 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:50,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:16:50,462 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash 551568581, now seen corresponding path program 21 times [2020-10-13 23:16:50,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:50,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000640429] [2020-10-13 23:16:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:55,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:16:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:16:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 23:16:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:16:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:16:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:16:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:16:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-13 23:16:55,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000640429] [2020-10-13 23:16:55,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:55,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:16:55,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352625025] [2020-10-13 23:16:55,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:16:55,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:16:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:55,829 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:16:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:56,120 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 23:16:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:16:56,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-13 23:16:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:56,121 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:16:56,122 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:16:56,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:16:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:16:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:16:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:16:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:16:56,128 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-13 23:16:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:56,129 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:16:56,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:16:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:16:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:16:56,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:56,130 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:56,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:16:56,131 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash 219651747, now seen corresponding path program 22 times [2020-10-13 23:16:56,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:56,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497771285] [2020-10-13 23:16:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 23:17:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:17:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:17:01,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497771285] [2020-10-13 23:17:01,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:01,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:01,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278534366] [2020-10-13 23:17:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:01,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:01,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:01,622 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:17:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:01,750 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-13 23:17:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:01,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 23:17:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:01,752 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:17:01,753 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:17:01,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:17:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:17:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:17:01,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:17:01,759 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-13 23:17:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:01,760 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:17:01,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:01,760 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:17:01,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:17:01,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:01,761 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:01,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:17:01,762 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 325135905, now seen corresponding path program 23 times [2020-10-13 23:17:01,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:01,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730158887] [2020-10-13 23:17:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:17:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:06,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:06,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:17:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:17:07,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730158887] [2020-10-13 23:17:07,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:07,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:07,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315841733] [2020-10-13 23:17:07,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:07,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:07,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:07,227 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:17:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:07,370 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 23:17:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:07,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 23:17:07,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:07,372 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:17:07,372 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:17:07,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:17:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:17:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:17:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:17:07,378 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-13 23:17:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:07,379 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:17:07,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:17:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:17:07,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:07,380 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:07,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:17:07,380 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1383803361, now seen corresponding path program 24 times [2020-10-13 23:17:07,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:07,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237784289] [2020-10-13 23:17:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:17:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:17:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:12,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:12,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:17:12,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:12,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:17:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 23:17:12,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237784289] [2020-10-13 23:17:12,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:12,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:17:12,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831970615] [2020-10-13 23:17:12,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:17:12,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:17:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:17:12,720 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:17:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:12,815 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:17:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:17:12,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:17:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:12,817 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:17:12,817 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:17:12,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:17:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:17:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:17:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:17:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:17:12,829 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:17:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:12,829 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:17:12,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:17:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:17:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:17:12,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:12,831 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:12,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:17:12,831 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1373069951, now seen corresponding path program 25 times [2020-10-13 23:17:12,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:12,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908579786] [2020-10-13 23:17:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:17,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:17:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 23:17:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:17:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-13 23:17:18,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908579786] [2020-10-13 23:17:18,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:18,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:18,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353052283] [2020-10-13 23:17:18,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:18,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:18,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:18,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:18,276 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:17:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:18,417 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-13 23:17:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:18,417 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:17:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:18,418 INFO L225 Difference]: With dead ends: 111 [2020-10-13 23:17:18,419 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:17:18,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:17:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:17:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:17:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:17:18,425 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:17:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:18,425 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:17:18,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:17:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:17:18,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:18,426 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:18,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:17:18,427 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1272058497, now seen corresponding path program 26 times [2020-10-13 23:17:18,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:18,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136242004] [2020-10-13 23:17:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:17:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:17:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:17:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-13 23:17:23,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136242004] [2020-10-13 23:17:23,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:23,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:23,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192831898] [2020-10-13 23:17:23,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:23,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:23,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:23,852 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:17:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:24,160 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-13 23:17:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:24,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-10-13 23:17:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:24,162 INFO L225 Difference]: With dead ends: 139 [2020-10-13 23:17:24,162 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:17:24,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:17:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:17:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:17:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:17:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:17:24,168 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 23:17:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:24,168 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:17:24,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:17:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:17:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:24,170 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:24,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:17:24,170 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:24,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2081829085, now seen corresponding path program 27 times [2020-10-13 23:17:24,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:24,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520632358] [2020-10-13 23:17:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:17:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:17:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:29,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:17:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:17:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 23:17:29,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520632358] [2020-10-13 23:17:29,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:29,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:17:29,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329274487] [2020-10-13 23:17:29,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:17:29,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:29,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:17:29,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:29,578 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:17:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:29,666 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-13 23:17:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:17:29,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:17:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:29,667 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:17:29,667 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:17:29,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:17:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:17:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:17:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:17:29,673 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:17:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:29,673 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:17:29,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:17:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:17:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:17:29,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:29,674 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:29,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:17:29,675 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 326739391, now seen corresponding path program 28 times [2020-10-13 23:17:29,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:29,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654521772] [2020-10-13 23:17:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:34,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:34,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:35,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:17:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:35,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:35,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:35,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654521772] [2020-10-13 23:17:35,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:35,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:35,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224769564] [2020-10-13 23:17:35,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:35,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:35,138 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:17:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:35,313 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-13 23:17:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:35,313 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:17:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:35,315 INFO L225 Difference]: With dead ends: 119 [2020-10-13 23:17:35,315 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:17:35,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:17:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:17:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:17:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:17:35,321 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:17:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:35,322 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:17:35,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:17:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:17:35,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:35,323 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:35,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:17:35,323 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash -823376323, now seen corresponding path program 29 times [2020-10-13 23:17:35,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:35,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963930602] [2020-10-13 23:17:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 23:17:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:40,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:40,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:40,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:17:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2020-10-13 23:17:40,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963930602] [2020-10-13 23:17:40,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:40,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:40,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130168562] [2020-10-13 23:17:40,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:40,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:40,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:40,832 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:17:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:41,003 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-13 23:17:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:41,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 138 [2020-10-13 23:17:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:41,006 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:17:41,006 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:17:41,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:17:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:17:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:17:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:17:41,012 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 23:17:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:41,012 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:17:41,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:17:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 23:17:41,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:41,014 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:41,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:17:41,014 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2016984891, now seen corresponding path program 30 times [2020-10-13 23:17:41,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:41,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968364152] [2020-10-13 23:17:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 23:17:46,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:17:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2020-10-13 23:17:46,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968364152] [2020-10-13 23:17:46,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:46,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:46,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934859914] [2020-10-13 23:17:46,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:46,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:46,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:46,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:46,485 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:17:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:46,836 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-10-13 23:17:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:46,837 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 140 [2020-10-13 23:17:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:46,838 INFO L225 Difference]: With dead ends: 153 [2020-10-13 23:17:46,839 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:17:46,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:17:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:17:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:17:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:17:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:17:46,845 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 23:17:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:46,845 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:17:46,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:17:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:17:46,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:46,846 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:46,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:17:46,847 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash 624755609, now seen corresponding path program 31 times [2020-10-13 23:17:46,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:46,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908419788] [2020-10-13 23:17:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:17:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:51,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:51,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:51,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:17:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:52,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:17:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:52,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-13 23:17:52,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908419788] [2020-10-13 23:17:52,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:52,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:52,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250855058] [2020-10-13 23:17:52,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:52,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:52,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:52,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:52,407 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:17:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:52,772 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 23:17:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:52,773 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 146 [2020-10-13 23:17:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:52,774 INFO L225 Difference]: With dead ends: 157 [2020-10-13 23:17:52,774 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:17:52,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:17:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:17:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:17:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:17:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:17:52,780 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 146 [2020-10-13 23:17:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:52,781 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:17:52,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:17:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:17:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:52,782 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:52,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:17:52,782 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1026766473, now seen corresponding path program 32 times [2020-10-13 23:17:52,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:52,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099967596] [2020-10-13 23:17:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:17:57,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:17:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:17:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:58,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:58,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:58,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 23:17:58,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099967596] [2020-10-13 23:17:58,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:58,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:58,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695088118] [2020-10-13 23:17:58,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:58,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:58,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:58,323 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:17:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:58,416 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 23:17:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:58,417 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:17:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:58,417 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:17:58,418 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:17:58,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:17:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:17:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:17:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:17:58,430 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:17:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:58,430 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:17:58,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:17:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:17:58,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:58,432 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:58,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:17:58,432 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash 740657625, now seen corresponding path program 33 times [2020-10-13 23:17:58,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:58,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169703113] [2020-10-13 23:17:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 23:18:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:18:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:18:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-13 23:18:04,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169703113] [2020-10-13 23:18:04,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:04,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:04,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056453873] [2020-10-13 23:18:04,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:04,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:04,047 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:18:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:04,446 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-13 23:18:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:04,446 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:18:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:04,447 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:18:04,448 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:18:04,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:18:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:18:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:18:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:18:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:18:04,463 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:18:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:04,463 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:18:04,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:18:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 23:18:04,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:04,465 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:04,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:18:04,467 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash 237756343, now seen corresponding path program 34 times [2020-10-13 23:18:04,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:04,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804302946] [2020-10-13 23:18:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 23:18:09,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:09,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 23:18:09,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:09,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:18:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 23:18:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:10,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-13 23:18:10,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804302946] [2020-10-13 23:18:10,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:10,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:10,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615585041] [2020-10-13 23:18:10,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:10,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:10,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:10,355 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:18:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:10,563 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:18:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:10,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-13 23:18:10,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:10,565 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:18:10,565 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:18:10,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:18:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:18:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:18:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:18:10,572 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-13 23:18:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:10,573 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:18:10,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:18:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:18:10,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:10,575 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:10,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:18:10,576 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:10,577 INFO L82 PathProgramCache]: Analyzing trace with hash -188278219, now seen corresponding path program 35 times [2020-10-13 23:18:10,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:10,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774101133] [2020-10-13 23:18:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:10,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:18:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:15,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:18:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:15,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:15,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:15,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:18:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:15,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:16,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:16,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 23:18:16,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774101133] [2020-10-13 23:18:16,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:16,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:18:16,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889379373] [2020-10-13 23:18:16,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:18:16,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:16,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:18:16,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:18:16,116 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:18:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:16,232 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-13 23:18:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:18:16,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:18:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:16,233 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:18:16,234 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:18:16,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:18:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:18:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:18:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:18:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:18:16,240 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:18:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:16,240 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:18:16,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:18:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:18:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:18:16,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:16,242 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:16,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:18:16,242 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash 364660759, now seen corresponding path program 36 times [2020-10-13 23:18:16,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:16,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113783805] [2020-10-13 23:18:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:18:21,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:21,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:21,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:18:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:18:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2020-10-13 23:18:21,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113783805] [2020-10-13 23:18:21,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:21,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:21,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112664198] [2020-10-13 23:18:21,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:21,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:21,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:21,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:21,912 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:18:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:22,093 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-13 23:18:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:22,094 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:18:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:22,095 INFO L225 Difference]: With dead ends: 141 [2020-10-13 23:18:22,095 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:18:22,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:18:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:18:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:18:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:18:22,102 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:18:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:22,103 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:18:22,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:18:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 23:18:22,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:22,105 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:22,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:18:22,105 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1507781269, now seen corresponding path program 37 times [2020-10-13 23:18:22,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:22,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166250832] [2020-10-13 23:18:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 23:18:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:27,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:27,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:27,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:18:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:18:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2188 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2020-10-13 23:18:27,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166250832] [2020-10-13 23:18:27,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:27,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:27,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145780004] [2020-10-13 23:18:27,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:27,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:27,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:27,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:27,775 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:18:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:28,202 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2020-10-13 23:18:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:28,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 166 [2020-10-13 23:18:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:28,204 INFO L225 Difference]: With dead ends: 177 [2020-10-13 23:18:28,205 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:18:28,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:18:28,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:18:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:18:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:18:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:18:28,212 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 166 [2020-10-13 23:18:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:28,212 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:18:28,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:28,212 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:18:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:18:28,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:28,214 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:28,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:18:28,214 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:28,214 INFO L82 PathProgramCache]: Analyzing trace with hash 166297971, now seen corresponding path program 38 times [2020-10-13 23:18:28,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:28,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261707981] [2020-10-13 23:18:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:18:33,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 23:18:33,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:18:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:18:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:18:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:33,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:33,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 23:18:33,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261707981] [2020-10-13 23:18:33,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:33,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:18:33,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458183764] [2020-10-13 23:18:33,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:18:33,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:18:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:33,979 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:18:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:34,070 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 23:18:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:18:34,071 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:18:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:34,072 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:18:34,072 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:18:34,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:18:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:18:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:18:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:18:34,078 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:18:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:34,079 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:18:34,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:18:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:18:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:18:34,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:34,080 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:34,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:18:34,080 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:34,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:34,081 INFO L82 PathProgramCache]: Analyzing trace with hash -504349483, now seen corresponding path program 39 times [2020-10-13 23:18:34,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:34,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943532143] [2020-10-13 23:18:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:18:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:18:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 1193 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2020-10-13 23:18:39,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943532143] [2020-10-13 23:18:39,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:39,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:39,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144694996] [2020-10-13 23:18:39,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:39,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:39,799 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:18:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:40,294 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2020-10-13 23:18:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:40,295 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:18:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:40,296 INFO L225 Difference]: With dead ends: 183 [2020-10-13 23:18:40,296 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:18:40,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:18:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:18:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:18:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:18:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:18:40,304 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:18:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:40,304 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:18:40,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:18:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 23:18:40,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:40,306 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:40,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:18:40,306 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:40,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:40,306 INFO L82 PathProgramCache]: Analyzing trace with hash -464559181, now seen corresponding path program 40 times [2020-10-13 23:18:40,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:40,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200686193] [2020-10-13 23:18:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:40,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 23:18:45,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:45,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 23:18:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:18:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:45,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 23:18:45,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 23:18:45,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:45,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:18:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:18:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:18:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking...