/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-tiling/mbpr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:04:05,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:04:05,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:04:05,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:04:05,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:04:05,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:04:05,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:04:05,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:04:05,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:04:05,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:04:05,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:04:05,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:04:05,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:04:05,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:04:05,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:04:05,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:04:05,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:04:05,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:04:05,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:04:05,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:04:05,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:04:05,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:04:05,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:04:05,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:04:05,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:04:05,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:04:05,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:04:05,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:04:05,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:04:05,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:04:05,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:04:05,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:04:05,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:04:05,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:04:05,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:04:05,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:04:05,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:04:05,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:04:05,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:04:05,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:04:05,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:04:05,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:04:05,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:04:05,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:04:05,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:04:05,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:04:05,650 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:04:05,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:04:05,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:04:05,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:04:05,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:04:05,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:04:05,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:04:05,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:04:05,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:04:05,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:04:05,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:04:05,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:04:05,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:04:05,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:04:05,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:04:05,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:04:05,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:04:05,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:04:05,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:04:05,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:04:05,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:04:05,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:04:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:04:05,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:04:05,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:04:05,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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; [2020-10-14 00:04:05,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:04:05,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:04:05,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:04:05,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:04:05,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:04:05,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-14 00:04:06,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c4837ed/3d0507b996f14dad896aea4ac7e085fa/FLAG66c523163 [2020-10-14 00:04:06,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:04:06,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr2.c [2020-10-14 00:04:06,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c4837ed/3d0507b996f14dad896aea4ac7e085fa/FLAG66c523163 [2020-10-14 00:04:06,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c4837ed/3d0507b996f14dad896aea4ac7e085fa [2020-10-14 00:04:06,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:04:06,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:04:06,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:06,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:04:06,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:04:06,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:06" (1/1) ... [2020-10-14 00:04:06,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53beef41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:06, skipping insertion in model container [2020-10-14 00:04:06,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:04:06" (1/1) ... [2020-10-14 00:04:06,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:04:06,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:04:07,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:07,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:04:07,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:04:07,238 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:04:07,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07 WrapperNode [2020-10-14 00:04:07,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:04:07,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:04:07,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:04:07,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:04:07,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... [2020-10-14 00:04:07,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:04:07,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:04:07,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:04:07,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:04:07,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:04:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:04:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:04:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:04:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:04:07,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:04:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:04:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:04:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:04:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:04:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:04:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:04:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:04:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:04:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:04:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:04:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:04:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:04:07,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:04:07,664 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 00:04:07,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:07 BoogieIcfgContainer [2020-10-14 00:04:07,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:04:07,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:04:07,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:04:07,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:04:07,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:04:06" (1/3) ... [2020-10-14 00:04:07,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45778ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:07, skipping insertion in model container [2020-10-14 00:04:07,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:04:07" (2/3) ... [2020-10-14 00:04:07,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45778ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:04:07, skipping insertion in model container [2020-10-14 00:04:07,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:04:07" (3/3) ... [2020-10-14 00:04:07,678 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2020-10-14 00:04:07,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:04:07,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:04:07,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:04:07,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:04:07,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:04:07,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:04:07,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:04:07,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:04:07,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:04:07,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:04:07,738 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:04:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-14 00:04:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 00:04:07,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:07,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:07,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1980951562, now seen corresponding path program 1 times [2020-10-14 00:04:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:07,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526508262] [2020-10-14 00:04:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:08,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:04:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-14 00:04:08,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:08,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:08,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:04:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:08,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 00:04:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:09,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:09,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:09,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:04:09,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:09,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:04:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:04:09,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:09,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:09,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 00:04:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:04:09,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526508262] [2020-10-14 00:04:09,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:09,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:04:09,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121363736] [2020-10-14 00:04:09,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:04:09,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:09,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:04:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:09,184 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-14 00:04:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:09,348 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2020-10-14 00:04:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:04:09,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-14 00:04:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:09,360 INFO L225 Difference]: With dead ends: 71 [2020-10-14 00:04:09,360 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 00:04:09,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:04:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 00:04:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-14 00:04:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 00:04:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-14 00:04:09,418 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2020-10-14 00:04:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:09,419 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-14 00:04:09,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:04:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-14 00:04:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 00:04:09,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:09,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:09,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:04:09,423 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash -437393247, now seen corresponding path program 1 times [2020-10-14 00:04:09,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:09,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458010189] [2020-10-14 00:04:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 00:04:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:04:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-14 00:04:10,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:10,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:04:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:04:10,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:10,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:10,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:10,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:10,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:04:10,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:10,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:10,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:04:10,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458010189] [2020-10-14 00:04:10,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:10,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:04:10,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298899074] [2020-10-14 00:04:10,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:04:10,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:10,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:04:10,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:04:10,756 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-14 00:04:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:10,992 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-14 00:04:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:04:10,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 00:04:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:10,997 INFO L225 Difference]: With dead ends: 59 [2020-10-14 00:04:10,997 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 00:04:11,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:04:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 00:04:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-14 00:04:11,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 00:04:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-14 00:04:11,028 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-10-14 00:04:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:11,028 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-14 00:04:11,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:04:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-14 00:04:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 00:04:11,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:11,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:11,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:04:11,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1500730603, now seen corresponding path program 1 times [2020-10-14 00:04:11,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:11,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554035513] [2020-10-14 00:04:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 00:04:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:04:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-14 00:04:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:04:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:04:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:12,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:12,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:04:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:12,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:12,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:04:12,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:12,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:12,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 00:04:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:04:12,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554035513] [2020-10-14 00:04:12,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:12,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:12,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368205528] [2020-10-14 00:04:12,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:12,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:12,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:12,084 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 4 states. [2020-10-14 00:04:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:12,229 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-14 00:04:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:12,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 00:04:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:12,232 INFO L225 Difference]: With dead ends: 53 [2020-10-14 00:04:12,232 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 00:04:12,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 00:04:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-14 00:04:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 00:04:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 00:04:12,247 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 32 [2020-10-14 00:04:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:12,247 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 00:04:12,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 00:04:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 00:04:12,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:12,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:12,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:04:12,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:12,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2093172115, now seen corresponding path program 1 times [2020-10-14 00:04:12,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:12,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945322630] [2020-10-14 00:04:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 00:04:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:04:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-14 00:04:13,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 00:04:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:13,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:13,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:13,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:13,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 00:04:13,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945322630] [2020-10-14 00:04:13,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:13,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:04:13,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953826423] [2020-10-14 00:04:13,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:04:13,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:13,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:04:13,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:04:13,383 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-14 00:04:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:13,552 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-14 00:04:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:04:13,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-14 00:04:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:13,553 INFO L225 Difference]: With dead ends: 45 [2020-10-14 00:04:13,553 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 00:04:13,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 00:04:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 00:04:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 00:04:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-14 00:04:13,562 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 32 [2020-10-14 00:04:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:13,563 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-14 00:04:13,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:04:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-14 00:04:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 00:04:13,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:13,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:13,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:04:13,565 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:13,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2091325073, now seen corresponding path program 1 times [2020-10-14 00:04:13,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:13,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989566592] [2020-10-14 00:04:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:14,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 00:04:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-14 00:04:14,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:14,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:04:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:04:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:14,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:14,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:14,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:14,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:14,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:14,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:14,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:14,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:14,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:04:14,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989566592] [2020-10-14 00:04:14,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:14,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:04:14,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64685627] [2020-10-14 00:04:14,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:04:14,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:04:14,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:04:14,985 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states. [2020-10-14 00:04:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:15,227 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2020-10-14 00:04:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:04:15,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 00:04:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:15,229 INFO L225 Difference]: With dead ends: 93 [2020-10-14 00:04:15,229 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 00:04:15,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:04:15,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 00:04:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2020-10-14 00:04:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 00:04:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-14 00:04:15,239 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 32 [2020-10-14 00:04:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:15,240 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-14 00:04:15,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:04:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-14 00:04:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 00:04:15,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:15,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:15,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:04:15,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:15,242 INFO L82 PathProgramCache]: Analyzing trace with hash 615294321, now seen corresponding path program 1 times [2020-10-14 00:04:15,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:15,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936400983] [2020-10-14 00:04:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:16,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 00:04:16,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:04:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-14 00:04:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:16,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:04:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:16,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:16,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:16,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:16,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:16,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:04:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:16,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:04:16,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936400983] [2020-10-14 00:04:16,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:04:16,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:04:16,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279475207] [2020-10-14 00:04:16,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:04:16,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:16,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:04:16,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:16,152 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 4 states. [2020-10-14 00:04:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:16,268 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2020-10-14 00:04:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:04:16,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 00:04:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:16,275 INFO L225 Difference]: With dead ends: 71 [2020-10-14 00:04:16,276 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 00:04:16,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:04:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 00:04:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 00:04:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 00:04:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-14 00:04:16,295 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 32 [2020-10-14 00:04:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:16,296 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-14 00:04:16,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:04:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-14 00:04:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 00:04:16,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:16,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:16,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:04:16,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash 175244985, now seen corresponding path program 1 times [2020-10-14 00:04:16,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:16,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285629073] [2020-10-14 00:04:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 00:04:18,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:04:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2258 [2020-10-14 00:04:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:04:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:04:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:04:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:18,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:18,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:18,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:04:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:18,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:18,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:18,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:18,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:04:18,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285629073] [2020-10-14 00:04:18,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:18,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:04:18,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894304915] [2020-10-14 00:04:18,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:04:18,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:18,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:04:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:04:18,741 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2020-10-14 00:04:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:19,202 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-14 00:04:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:04:19,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-14 00:04:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:19,205 INFO L225 Difference]: With dead ends: 66 [2020-10-14 00:04:19,207 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 00:04:19,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:04:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 00:04:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-10-14 00:04:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 00:04:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-14 00:04:19,231 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 41 [2020-10-14 00:04:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:19,231 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-14 00:04:19,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:04:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-14 00:04:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 00:04:19,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:19,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:19,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:04:19,238 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:19,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1585724591, now seen corresponding path program 2 times [2020-10-14 00:04:19,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:19,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512614619] [2020-10-14 00:04:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:04:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:04:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:04:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:04:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:04:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:04:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:24,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:24,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:04:24,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:04:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:04:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:24,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:24,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:24,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:04:24,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512614619] [2020-10-14 00:04:24,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:24,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:04:24,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315073702] [2020-10-14 00:04:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:04:24,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:24,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:04:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:04:24,445 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 10 states. [2020-10-14 00:04:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:25,017 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-14 00:04:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:04:25,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-14 00:04:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:25,019 INFO L225 Difference]: With dead ends: 117 [2020-10-14 00:04:25,019 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 00:04:25,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-14 00:04:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 00:04:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2020-10-14 00:04:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 00:04:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-14 00:04:25,039 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 50 [2020-10-14 00:04:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:25,040 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-14 00:04:25,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:04:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-14 00:04:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:04:25,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:25,045 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:25,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:04:25,046 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:25,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1720027013, now seen corresponding path program 3 times [2020-10-14 00:04:25,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:25,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96918364] [2020-10-14 00:04:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:04:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:04:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:04:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:04:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:04:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:30,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:30,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:04:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:30,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:30,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:30,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:30,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:04:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:30,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:30,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:30,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:30,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:04:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:04:30,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96918364] [2020-10-14 00:04:30,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:30,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:04:30,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734860107] [2020-10-14 00:04:30,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:04:30,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:04:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:04:30,356 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 12 states. [2020-10-14 00:04:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:30,685 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-10-14 00:04:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:04:30,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-14 00:04:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:30,687 INFO L225 Difference]: With dead ends: 80 [2020-10-14 00:04:30,687 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 00:04:30,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:04:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 00:04:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-14 00:04:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 00:04:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-14 00:04:30,696 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 58 [2020-10-14 00:04:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:30,697 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-14 00:04:30,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:04:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-14 00:04:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:04:30,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:30,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:30,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:04:30,699 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1563823033, now seen corresponding path program 4 times [2020-10-14 00:04:30,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:30,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044813125] [2020-10-14 00:04:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:04:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:04:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3841 [2020-10-14 00:04:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:04:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 00:04:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:34,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:04:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:34,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:04:34,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:34,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:04:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:34,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:04:34,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044813125] [2020-10-14 00:04:34,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:34,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:04:34,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067314558] [2020-10-14 00:04:34,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:04:34,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:04:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:04:34,763 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 11 states. [2020-10-14 00:04:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:35,203 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-14 00:04:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:04:35,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-14 00:04:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:35,205 INFO L225 Difference]: With dead ends: 92 [2020-10-14 00:04:35,205 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 00:04:35,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:04:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 00:04:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-10-14 00:04:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 00:04:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-14 00:04:35,224 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 58 [2020-10-14 00:04:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:35,224 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-14 00:04:35,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:04:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-14 00:04:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 00:04:35,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:35,226 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:35,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:04:35,226 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:35,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:35,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1467340719, now seen corresponding path program 5 times [2020-10-14 00:04:35,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:35,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423964777] [2020-10-14 00:04:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:04:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3568 [2020-10-14 00:04:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:38,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:04:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 00:04:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:38,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:38,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:38,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:38,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:04:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:39,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:04:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:04:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:39,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:39,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:39,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:39,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:04:39,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423964777] [2020-10-14 00:04:39,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:39,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:04:39,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613590993] [2020-10-14 00:04:39,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:04:39,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:39,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:04:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:04:39,038 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 14 states. [2020-10-14 00:04:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:39,721 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-14 00:04:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:04:39,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-14 00:04:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:39,724 INFO L225 Difference]: With dead ends: 93 [2020-10-14 00:04:39,724 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 00:04:39,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:04:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 00:04:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2020-10-14 00:04:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 00:04:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-10-14 00:04:39,736 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 67 [2020-10-14 00:04:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:39,737 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-10-14 00:04:39,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:04:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-10-14 00:04:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 00:04:39,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:39,738 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:39,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:04:39,738 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1868374137, now seen corresponding path program 6 times [2020-10-14 00:04:39,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:39,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249047185] [2020-10-14 00:04:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:39,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 00:04:44,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:04:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:04:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:04:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:44,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:04:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:04:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:04:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:44,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:44,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:44,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:44,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:44,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:44,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:44,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:44,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:44,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 00:04:44,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249047185] [2020-10-14 00:04:44,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:44,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:04:44,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291292202] [2020-10-14 00:04:44,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:04:44,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:44,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:04:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:04:44,993 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 13 states. [2020-10-14 00:04:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:46,226 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2020-10-14 00:04:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:04:46,227 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-14 00:04:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:46,229 INFO L225 Difference]: With dead ends: 181 [2020-10-14 00:04:46,229 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 00:04:46,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:04:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 00:04:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-10-14 00:04:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 00:04:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-10-14 00:04:46,251 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 76 [2020-10-14 00:04:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:46,251 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-10-14 00:04:46,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:04:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-10-14 00:04:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 00:04:46,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:46,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:46,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:04:46,253 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1461221819, now seen corresponding path program 7 times [2020-10-14 00:04:46,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:46,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424582933] [2020-10-14 00:04:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:04:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:51,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:51,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:51,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:04:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:51,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:04:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:51,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:04:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:51,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:51,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:51,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:51,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 00:04:51,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424582933] [2020-10-14 00:04:51,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:51,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:04:51,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407802650] [2020-10-14 00:04:51,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:04:51,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:04:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:04:51,612 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 14 states. [2020-10-14 00:04:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:52,631 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2020-10-14 00:04:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:04:52,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-14 00:04:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:52,633 INFO L225 Difference]: With dead ends: 124 [2020-10-14 00:04:52,633 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 00:04:52,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:04:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 00:04:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2020-10-14 00:04:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 00:04:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2020-10-14 00:04:52,647 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 84 [2020-10-14 00:04:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:52,647 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2020-10-14 00:04:52,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:04:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2020-10-14 00:04:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 00:04:52,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:52,649 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:04:52,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:04:52,649 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash 989297315, now seen corresponding path program 8 times [2020-10-14 00:04:52,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:52,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356873743] [2020-10-14 00:04:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:04:57,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:04:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:04:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:04:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:04:57,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:57,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:04:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:04:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:04:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:04:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:04:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:04:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:04:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:04:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:57,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:57,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:57,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:04:57,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:57,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:04:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:04:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:04:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:04:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:04:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:04:58,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:04:58,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:04:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:04:58,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:04:58,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:04:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:04:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:04:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:04:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:04:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 00:04:58,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356873743] [2020-10-14 00:04:58,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:04:58,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:04:58,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930725583] [2020-10-14 00:04:58,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:04:58,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:04:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:04:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:04:58,039 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 15 states. [2020-10-14 00:04:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:04:58,835 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-10-14 00:04:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:04:58,836 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 93 [2020-10-14 00:04:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:04:58,837 INFO L225 Difference]: With dead ends: 112 [2020-10-14 00:04:58,837 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 00:04:58,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:04:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 00:04:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2020-10-14 00:04:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 00:04:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-10-14 00:04:58,857 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 93 [2020-10-14 00:04:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:04:58,857 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-10-14 00:04:58,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:04:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-10-14 00:04:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 00:04:58,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:04:58,865 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2020-10-14 00:04:58,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:04:58,865 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:04:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:04:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -816141019, now seen corresponding path program 9 times [2020-10-14 00:04:58,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:04:58,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769748458] [2020-10-14 00:04:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:04:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:04:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:04:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:03,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 00:05:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:05:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:05:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:04,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:04,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:04,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:05:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:04,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:05:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:05:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:05:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:04,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:04,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:05:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:05:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:04,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:04,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:04,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:04,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:04,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:04,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:04,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 89 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-14 00:05:04,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769748458] [2020-10-14 00:05:04,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:04,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:05:04,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216130326] [2020-10-14 00:05:04,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:05:04,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:04,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:05:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:05:04,697 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 22 states. [2020-10-14 00:05:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:07,118 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2020-10-14 00:05:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 00:05:07,118 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 93 [2020-10-14 00:05:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:07,122 INFO L225 Difference]: With dead ends: 180 [2020-10-14 00:05:07,122 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 00:05:07,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=415, Invalid=2665, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 00:05:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 00:05:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 165. [2020-10-14 00:05:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 00:05:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2020-10-14 00:05:07,151 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 93 [2020-10-14 00:05:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:07,152 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2020-10-14 00:05:07,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:05:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2020-10-14 00:05:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 00:05:07,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:07,153 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 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] [2020-10-14 00:05:07,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:05:07,154 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1290932163, now seen corresponding path program 10 times [2020-10-14 00:05:07,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:07,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351266899] [2020-10-14 00:05:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:05:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 00:05:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:05:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:05:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:05:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 00:05:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:05:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 00:05:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 00:05:12,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351266899] [2020-10-14 00:05:12,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:12,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:05:12,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823869803] [2020-10-14 00:05:12,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:05:12,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:12,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:05:12,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:12,461 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 16 states. [2020-10-14 00:05:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:13,878 INFO L93 Difference]: Finished difference Result 251 states and 275 transitions. [2020-10-14 00:05:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 00:05:13,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 102 [2020-10-14 00:05:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:13,880 INFO L225 Difference]: With dead ends: 251 [2020-10-14 00:05:13,880 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 00:05:13,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=566, Invalid=1504, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:05:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 00:05:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2020-10-14 00:05:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:05:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2020-10-14 00:05:13,891 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 102 [2020-10-14 00:05:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:13,892 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2020-10-14 00:05:13,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:05:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2020-10-14 00:05:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 00:05:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:13,893 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:13,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:05:13,893 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash 316418009, now seen corresponding path program 11 times [2020-10-14 00:05:13,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:13,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361552955] [2020-10-14 00:05:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 00:05:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 00:05:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:05:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:05:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:05:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:05:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:19,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:05:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:19,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:19,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:19,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 00:05:19,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361552955] [2020-10-14 00:05:19,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:19,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:05:19,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302581912] [2020-10-14 00:05:19,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:05:19,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:05:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:05:19,223 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand 17 states. [2020-10-14 00:05:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:20,406 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2020-10-14 00:05:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:05:20,407 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-14 00:05:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:20,409 INFO L225 Difference]: With dead ends: 120 [2020-10-14 00:05:20,409 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 00:05:20,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:05:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 00:05:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2020-10-14 00:05:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 00:05:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2020-10-14 00:05:20,421 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 101 [2020-10-14 00:05:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:20,422 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2020-10-14 00:05:20,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:05:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2020-10-14 00:05:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:05:20,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:20,423 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:20,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:05:20,424 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash 773676943, now seen corresponding path program 12 times [2020-10-14 00:05:20,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:20,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604682776] [2020-10-14 00:05:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:05:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 00:05:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:25,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:25,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:05:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:05:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:05:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:05:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:05:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:05:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:25,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 44 proven. 86 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 00:05:25,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604682776] [2020-10-14 00:05:25,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:25,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:05:25,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383792242] [2020-10-14 00:05:25,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:05:25,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:25,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:05:25,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:25,817 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand 16 states. [2020-10-14 00:05:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:26,803 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2020-10-14 00:05:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:05:26,804 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 110 [2020-10-14 00:05:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:26,806 INFO L225 Difference]: With dead ends: 132 [2020-10-14 00:05:26,806 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 00:05:26,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:05:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 00:05:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2020-10-14 00:05:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 00:05:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-10-14 00:05:26,817 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 110 [2020-10-14 00:05:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:26,817 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-10-14 00:05:26,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:05:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-10-14 00:05:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:05:26,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:26,819 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:26,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:05:26,819 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash -237440307, now seen corresponding path program 13 times [2020-10-14 00:05:26,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:26,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556100314] [2020-10-14 00:05:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:31,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:05:31,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:05:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:05:31,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:31,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 00:05:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:31,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:05:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:32,496 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-10-14 00:05:32,896 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-14 00:05:33,123 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-10-14 00:05:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:05:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:05:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:05:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:33,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:05:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:05:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:05:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:33,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 33 proven. 122 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 00:05:33,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556100314] [2020-10-14 00:05:33,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:33,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:05:33,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350902799] [2020-10-14 00:05:33,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:05:33,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:05:33,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:05:33,955 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 24 states. [2020-10-14 00:05:34,548 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-14 00:05:34,760 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-10-14 00:05:35,228 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-14 00:05:35,925 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-14 00:05:36,300 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-14 00:05:36,473 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-14 00:05:36,765 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-14 00:05:36,969 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-14 00:05:37,386 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-14 00:05:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:39,556 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2020-10-14 00:05:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:05:39,557 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 110 [2020-10-14 00:05:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:39,559 INFO L225 Difference]: With dead ends: 170 [2020-10-14 00:05:39,559 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 00:05:39,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=452, Invalid=2854, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 00:05:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 00:05:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2020-10-14 00:05:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 00:05:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2020-10-14 00:05:39,576 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 110 [2020-10-14 00:05:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:39,577 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2020-10-14 00:05:39,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:05:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2020-10-14 00:05:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:05:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:39,578 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:39,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:05:39,579 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash 257288692, now seen corresponding path program 14 times [2020-10-14 00:05:39,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:39,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771276748] [2020-10-14 00:05:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 00:05:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:05:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-14 00:05:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:05:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:05:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 00:05:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:05:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 00:05:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 00:05:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 00:05:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:05:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:05:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:44,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:44,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:44,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 57 proven. 28 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 00:05:44,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771276748] [2020-10-14 00:05:44,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:44,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:05:44,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978798948] [2020-10-14 00:05:44,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:05:44,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:44,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:05:44,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:05:44,922 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 14 states. [2020-10-14 00:05:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:45,614 INFO L93 Difference]: Finished difference Result 261 states and 279 transitions. [2020-10-14 00:05:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:05:45,616 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2020-10-14 00:05:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:45,618 INFO L225 Difference]: With dead ends: 261 [2020-10-14 00:05:45,618 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 00:05:45,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:05:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 00:05:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 191. [2020-10-14 00:05:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 00:05:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 204 transitions. [2020-10-14 00:05:45,639 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 204 transitions. Word has length 114 [2020-10-14 00:05:45,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:45,639 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 204 transitions. [2020-10-14 00:05:45,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:05:45,639 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 204 transitions. [2020-10-14 00:05:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 00:05:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:45,641 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:45,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:05:45,641 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash 870557467, now seen corresponding path program 15 times [2020-10-14 00:05:45,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:45,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442357174] [2020-10-14 00:05:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:50,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:05:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:50,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:05:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:05:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:52,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:05:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:05:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:05:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:05:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:05:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:05:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:52,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 00:05:52,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442357174] [2020-10-14 00:05:52,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:05:52,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030885758] [2020-10-14 00:05:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:05:52,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:52,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:05:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:05:52,404 INFO L87 Difference]: Start difference. First operand 191 states and 204 transitions. Second operand 25 states. [2020-10-14 00:05:56,664 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-14 00:05:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:57,097 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2020-10-14 00:05:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 00:05:57,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 119 [2020-10-14 00:05:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:57,101 INFO L225 Difference]: With dead ends: 222 [2020-10-14 00:05:57,101 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 00:05:57,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=601, Invalid=4091, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 00:05:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 00:05:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 199. [2020-10-14 00:05:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 00:05:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2020-10-14 00:05:57,131 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 119 [2020-10-14 00:05:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:57,132 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2020-10-14 00:05:57,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:05:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2020-10-14 00:05:57,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 00:05:57,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:57,134 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:57,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:05:57,134 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2006382695, now seen corresponding path program 16 times [2020-10-14 00:05:57,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:57,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869095967] [2020-10-14 00:05:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 00:06:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 00:06:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:02,699 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-10-14 00:06:03,087 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 32 [2020-10-14 00:06:03,309 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 27 [2020-10-14 00:06:03,606 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 44 [2020-10-14 00:06:03,986 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 43 [2020-10-14 00:06:04,313 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2020-10-14 00:06:04,636 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 36 [2020-10-14 00:06:05,073 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 32 [2020-10-14 00:06:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:06,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:06:06,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:06:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:06:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:06,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:06:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:06,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:06:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:06:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:06:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 00:06:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:06:06,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:06,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:06,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:06,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 00:06:06,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869095967] [2020-10-14 00:06:06,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:06,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:06:06,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770190655] [2020-10-14 00:06:06,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:06:06,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:06,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:06:06,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:06:06,263 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand 26 states. [2020-10-14 00:06:08,480 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-14 00:06:08,712 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-14 00:06:08,990 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-14 00:06:09,756 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-14 00:06:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:11,538 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-10-14 00:06:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:06:11,539 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2020-10-14 00:06:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:11,541 INFO L225 Difference]: With dead ends: 264 [2020-10-14 00:06:11,541 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 00:06:11,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=420, Invalid=2772, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 00:06:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 00:06:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 236. [2020-10-14 00:06:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 00:06:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 256 transitions. [2020-10-14 00:06:11,579 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 256 transitions. Word has length 118 [2020-10-14 00:06:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:11,580 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 256 transitions. [2020-10-14 00:06:11,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:06:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 256 transitions. [2020-10-14 00:06:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 00:06:11,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:11,582 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:11,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:06:11,582 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash 49723584, now seen corresponding path program 17 times [2020-10-14 00:06:11,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:11,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730399017] [2020-10-14 00:06:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:06:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 00:06:16,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:16,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:06:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 00:06:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:06:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:06:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 00:06:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:16,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 00:06:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:16,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 00:06:16,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730399017] [2020-10-14 00:06:16,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:16,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:06:16,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522450675] [2020-10-14 00:06:16,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:06:16,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:06:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:06:16,975 INFO L87 Difference]: Start difference. First operand 236 states and 256 transitions. Second operand 16 states. [2020-10-14 00:06:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:17,915 INFO L93 Difference]: Finished difference Result 361 states and 387 transitions. [2020-10-14 00:06:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:06:17,916 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 122 [2020-10-14 00:06:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:17,918 INFO L225 Difference]: With dead ends: 361 [2020-10-14 00:06:17,919 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 00:06:17,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:06:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 00:06:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 288. [2020-10-14 00:06:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 00:06:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2020-10-14 00:06:17,954 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 122 [2020-10-14 00:06:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:17,954 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2020-10-14 00:06:17,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:06:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2020-10-14 00:06:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 00:06:17,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:17,957 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:17,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:06:17,958 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:17,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1358697843, now seen corresponding path program 18 times [2020-10-14 00:06:17,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:17,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013018253] [2020-10-14 00:06:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:22,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:06:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 00:06:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:23,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:06:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 00:06:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:06:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 00:06:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 00:06:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:06:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:06:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 00:06:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 144 proven. 64 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 00:06:23,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013018253] [2020-10-14 00:06:23,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:23,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:06:23,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487411028] [2020-10-14 00:06:23,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:06:23,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:23,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:06:23,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:06:23,387 INFO L87 Difference]: Start difference. First operand 288 states and 309 transitions. Second operand 19 states. [2020-10-14 00:06:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:24,966 INFO L93 Difference]: Finished difference Result 291 states and 311 transitions. [2020-10-14 00:06:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:06:24,967 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2020-10-14 00:06:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:24,969 INFO L225 Difference]: With dead ends: 291 [2020-10-14 00:06:24,969 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 00:06:24,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=353, Invalid=1369, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 00:06:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 00:06:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-14 00:06:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 00:06:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2020-10-14 00:06:24,992 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 128 [2020-10-14 00:06:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:24,992 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2020-10-14 00:06:24,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:06:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2020-10-14 00:06:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 00:06:24,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:24,994 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:24,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:06:24,994 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1722824655, now seen corresponding path program 19 times [2020-10-14 00:06:24,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:24,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136526635] [2020-10-14 00:06:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:25,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:06:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,072 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-14 00:06:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:31,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:06:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:06:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:06:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:06:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:06:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:31,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 00:06:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:06:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 24 proven. 188 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 00:06:31,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136526635] [2020-10-14 00:06:31,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:31,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:06:31,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391178341] [2020-10-14 00:06:31,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:06:31,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:06:31,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:06:31,907 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand 28 states. [2020-10-14 00:06:32,233 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-14 00:06:33,699 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-14 00:06:34,660 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-14 00:06:35,356 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-14 00:06:36,565 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-14 00:06:36,736 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-14 00:06:37,471 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-14 00:06:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:40,252 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2020-10-14 00:06:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-14 00:06:40,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 127 [2020-10-14 00:06:40,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:40,256 INFO L225 Difference]: With dead ends: 253 [2020-10-14 00:06:40,256 INFO L226 Difference]: Without dead ends: 251 [2020-10-14 00:06:40,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=813, Invalid=8499, Unknown=0, NotChecked=0, Total=9312 [2020-10-14 00:06:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-14 00:06:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 228. [2020-10-14 00:06:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 00:06:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 247 transitions. [2020-10-14 00:06:40,288 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 247 transitions. Word has length 127 [2020-10-14 00:06:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:40,288 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 247 transitions. [2020-10-14 00:06:40,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:06:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 247 transitions. [2020-10-14 00:06:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 00:06:40,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:40,290 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:40,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:06:40,291 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:40,291 INFO L82 PathProgramCache]: Analyzing trace with hash 163078501, now seen corresponding path program 20 times [2020-10-14 00:06:40,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:40,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71541372] [2020-10-14 00:06:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 00:06:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:06:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:46,023 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2020-10-14 00:06:46,276 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 48 [2020-10-14 00:06:46,966 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 55 [2020-10-14 00:06:47,231 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 39 [2020-10-14 00:06:47,616 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 50 [2020-10-14 00:06:48,288 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 49 [2020-10-14 00:06:49,029 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 50 [2020-10-14 00:06:49,432 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-14 00:06:49,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-14 00:06:50,209 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-10-14 00:06:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:06:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:06:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 00:06:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:06:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:06:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 00:06:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:51,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 59 proven. 160 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 00:06:51,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71541372] [2020-10-14 00:06:51,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:51,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 00:06:51,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599409618] [2020-10-14 00:06:51,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 00:06:51,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 00:06:51,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:06:51,375 INFO L87 Difference]: Start difference. First operand 228 states and 247 transitions. Second operand 28 states. [2020-10-14 00:06:52,643 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-14 00:06:53,081 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-14 00:06:53,353 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-14 00:06:53,652 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-14 00:06:54,072 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-10-14 00:06:54,686 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-14 00:06:55,230 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-14 00:06:55,861 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2020-10-14 00:06:56,257 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-14 00:06:56,642 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-10-14 00:06:56,907 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 00:06:57,300 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-14 00:06:57,529 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-14 00:06:57,965 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-14 00:06:58,367 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-14 00:06:58,900 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-14 00:06:59,195 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-14 00:06:59,711 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-14 00:07:00,096 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-14 00:07:00,536 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2020-10-14 00:07:00,913 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2020-10-14 00:07:01,402 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-14 00:07:01,870 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2020-10-14 00:07:02,305 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-14 00:07:02,672 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2020-10-14 00:07:02,997 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2020-10-14 00:07:03,361 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 00:07:03,663 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 00:07:04,042 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 00:07:04,297 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 00:07:04,743 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-14 00:07:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:05,124 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2020-10-14 00:07:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 00:07:05,126 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 126 [2020-10-14 00:07:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:05,129 INFO L225 Difference]: With dead ends: 307 [2020-10-14 00:07:05,129 INFO L226 Difference]: Without dead ends: 281 [2020-10-14 00:07:05,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 18 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=668, Invalid=4024, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 00:07:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-14 00:07:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 265. [2020-10-14 00:07:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 00:07:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 291 transitions. [2020-10-14 00:07:05,161 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 291 transitions. Word has length 126 [2020-10-14 00:07:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:05,162 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 291 transitions. [2020-10-14 00:07:05,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 00:07:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 291 transitions. [2020-10-14 00:07:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:05,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:05,164 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:05,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:07:05,164 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash 908872844, now seen corresponding path program 21 times [2020-10-14 00:07:05,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:05,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748577469] [2020-10-14 00:07:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 00:07:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:07:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:07:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:10,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 103 proven. 66 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-14 00:07:10,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748577469] [2020-10-14 00:07:10,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:10,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:07:10,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445943146] [2020-10-14 00:07:10,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:07:10,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:07:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:07:10,647 INFO L87 Difference]: Start difference. First operand 265 states and 291 transitions. Second operand 18 states. [2020-10-14 00:07:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:12,267 INFO L93 Difference]: Finished difference Result 417 states and 455 transitions. [2020-10-14 00:07:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:07:12,269 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-10-14 00:07:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:12,272 INFO L225 Difference]: With dead ends: 417 [2020-10-14 00:07:12,272 INFO L226 Difference]: Without dead ends: 341 [2020-10-14 00:07:12,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:07:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-14 00:07:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 258. [2020-10-14 00:07:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 00:07:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 280 transitions. [2020-10-14 00:07:12,320 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 280 transitions. Word has length 130 [2020-10-14 00:07:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:12,320 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 280 transitions. [2020-10-14 00:07:12,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:07:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 280 transitions. [2020-10-14 00:07:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 00:07:12,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:12,324 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:12,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:07:12,325 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash -184753063, now seen corresponding path program 22 times [2020-10-14 00:07:12,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:12,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059483137] [2020-10-14 00:07:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 00:07:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:07:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:18,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:07:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:07:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:07:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:07:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:07:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 00:07:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:07:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:18,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 00:07:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 70 proven. 181 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-14 00:07:18,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059483137] [2020-10-14 00:07:18,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:18,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 00:07:18,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811987014] [2020-10-14 00:07:18,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 00:07:18,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 00:07:18,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:07:18,642 INFO L87 Difference]: Start difference. First operand 258 states and 280 transitions. Second operand 26 states. [2020-10-14 00:07:20,776 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-14 00:07:21,245 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-14 00:07:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:23,148 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2020-10-14 00:07:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:07:23,150 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 136 [2020-10-14 00:07:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:23,154 INFO L225 Difference]: With dead ends: 326 [2020-10-14 00:07:23,154 INFO L226 Difference]: Without dead ends: 310 [2020-10-14 00:07:23,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=514, Invalid=2678, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 00:07:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-14 00:07:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 300. [2020-10-14 00:07:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-14 00:07:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 329 transitions. [2020-10-14 00:07:23,208 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 329 transitions. Word has length 136 [2020-10-14 00:07:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:23,209 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 329 transitions. [2020-10-14 00:07:23,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 00:07:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 329 transitions. [2020-10-14 00:07:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 00:07:23,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:23,211 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:23,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:07:23,212 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1195870313, now seen corresponding path program 23 times [2020-10-14 00:07:23,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:23,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144694986] [2020-10-14 00:07:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:28,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 00:07:28,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 00:07:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 00:07:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:28,551 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 8 [2020-10-14 00:07:28,674 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 23 [2020-10-14 00:07:28,826 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2020-10-14 00:07:29,104 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 31 [2020-10-14 00:07:29,342 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-10-14 00:07:29,610 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-10-14 00:07:29,896 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-10-14 00:07:30,180 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2020-10-14 00:07:30,459 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 28 [2020-10-14 00:07:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:31,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:07:31,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:07:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 00:07:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:07:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:07:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 00:07:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 00:07:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:07:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 00:07:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 41 proven. 201 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-14 00:07:31,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144694986] [2020-10-14 00:07:31,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:07:31,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319190563] [2020-10-14 00:07:31,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:07:31,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:31,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:07:31,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:07:31,810 INFO L87 Difference]: Start difference. First operand 300 states and 329 transitions. Second operand 25 states. [2020-10-14 00:07:36,219 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-14 00:07:36,806 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-14 00:07:37,809 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-14 00:07:38,377 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-14 00:07:38,584 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-14 00:07:39,353 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-14 00:07:39,704 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-14 00:07:39,897 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-14 00:07:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:41,319 INFO L93 Difference]: Finished difference Result 334 states and 370 transitions. [2020-10-14 00:07:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 00:07:41,321 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-10-14 00:07:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:41,324 INFO L225 Difference]: With dead ends: 334 [2020-10-14 00:07:41,325 INFO L226 Difference]: Without dead ends: 318 [2020-10-14 00:07:41,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1074, Invalid=5246, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 00:07:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-14 00:07:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 305. [2020-10-14 00:07:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-14 00:07:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 335 transitions. [2020-10-14 00:07:41,382 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 335 transitions. Word has length 136 [2020-10-14 00:07:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:41,382 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 335 transitions. [2020-10-14 00:07:41,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:07:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 335 transitions. [2020-10-14 00:07:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 00:07:41,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:41,385 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:41,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:07:41,386 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1692500017, now seen corresponding path program 24 times [2020-10-14 00:07:41,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099394521] [2020-10-14 00:07:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:43,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:44,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 00:07:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:07:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 00:07:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0