/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-lopstr16/scalar_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:22:45,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:22:45,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:22:45,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:22:45,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:22:45,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:22:45,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:22:45,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:22:45,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:22:45,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:22:45,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:22:45,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:22:45,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:22:45,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:22:45,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:22:45,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:22:45,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:22:45,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:22:45,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:22:45,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:22:45,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:22:45,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:22:45,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:22:45,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:22:45,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:22:45,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:22:45,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:22:45,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:22:45,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:22:45,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:22:45,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:22:45,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:22:45,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:22:45,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:22:45,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:22:45,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:22:45,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:22:45,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:22:45,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:22:45,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:22:45,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:22:45,175 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 18:22:45,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:22:45,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:22:45,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:22:45,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:22:45,202 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:22:45,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:22:45,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:22:45,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:22:45,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:22:45,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:22:45,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:22:45,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:22:45,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:22:45,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:22:45,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:22:45,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:22:45,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:22:45,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:22:45,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:22:45,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:22:45,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:22:45,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:22:45,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:22:45,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:22:45,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:22:45,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:22:45,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:22:45,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:22:45,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:22:45,572 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:22:45,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/scalar_loopdep.i [2020-10-14 18:22:45,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9ab067b9/9303770ef58648d6a8623f319655023e/FLAG9f5196f4f [2020-10-14 18:22:46,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:22:46,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/scalar_loopdep.i [2020-10-14 18:22:46,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9ab067b9/9303770ef58648d6a8623f319655023e/FLAG9f5196f4f [2020-10-14 18:22:46,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9ab067b9/9303770ef58648d6a8623f319655023e [2020-10-14 18:22:46,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:22:46,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:22:46,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:22:46,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:22:46,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:22:46,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:46" (1/1) ... [2020-10-14 18:22:46,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e3fcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:46, skipping insertion in model container [2020-10-14 18:22:46,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:22:46" (1/1) ... [2020-10-14 18:22:46,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:22:46,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:22:46,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:22:48,370 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:22:48,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:22:48,418 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:22:48,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48 WrapperNode [2020-10-14 18:22:48,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:22:48,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:22:48,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:22:48,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:22:48,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (1/1) ... [2020-10-14 18:22:48,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:22:48,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:22:48,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:22:48,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:22:48,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (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 18:22:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:22:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:22:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:22:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:22:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:22:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:22:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:22:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:22:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:22:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:22:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:22:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:22:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:22:48,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:22:48,846 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:22:48,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:48 BoogieIcfgContainer [2020-10-14 18:22:48,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:22:48,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:22:48,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:22:48,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:22:48,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:22:46" (1/3) ... [2020-10-14 18:22:48,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f4fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:48, skipping insertion in model container [2020-10-14 18:22:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:22:48" (2/3) ... [2020-10-14 18:22:48,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7f4fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:22:48, skipping insertion in model container [2020-10-14 18:22:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:22:48" (3/3) ... [2020-10-14 18:22:48,878 INFO L109 eAbstractionObserver]: Analyzing ICFG scalar_loopdep.i [2020-10-14 18:22:48,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:22:48,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:22:48,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:22:48,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:22:48,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:22:48,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:22:48,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:22:48,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:22:48,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:22:48,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:22:48,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:22:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-14 18:22:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 18:22:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:48,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:22:48,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:48,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1821336840, now seen corresponding path program 1 times [2020-10-14 18:22:48,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:48,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657059942] [2020-10-14 18:22:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:49,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:49,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 18:22:49,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 18:22:49,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:49,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:22:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:22:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:22:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:22:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:49,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 18:22:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:49,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:22:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:22:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:22:49,373 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 18:22:49,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657059942] [2020-10-14 18:22:49,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:22:49,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:22:49,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080963820] [2020-10-14 18:22:49,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:22:49,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:22:49,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:22:49,405 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-14 18:22:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:22:49,517 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-14 18:22:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:22:49,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 18:22:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:22:49,530 INFO L225 Difference]: With dead ends: 49 [2020-10-14 18:22:49,531 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 18:22:49,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:22:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 18:22:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2020-10-14 18:22:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 18:22:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-14 18:22:49,586 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-10-14 18:22:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:22:49,587 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-14 18:22:49,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:22:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-14 18:22:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 18:22:49,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:49,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:22:49,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:22:49,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:49,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1443575666, now seen corresponding path program 1 times [2020-10-14 18:22:49,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:49,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916740863] [2020-10-14 18:22:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:49,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 18:22:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 18:22:49,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:49,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:22:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:22:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:22:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:22:49,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:49,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:22:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:22:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:49,826 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 18:22:49,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916740863] [2020-10-14 18:22:49,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:22:49,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:22:49,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342433011] [2020-10-14 18:22:49,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:22:49,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:49,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:22:49,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:22:49,830 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2020-10-14 18:22:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:22:49,931 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-14 18:22:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:22:49,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 18:22:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:22:49,933 INFO L225 Difference]: With dead ends: 36 [2020-10-14 18:22:49,933 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 18:22:49,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:22:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 18:22:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-10-14 18:22:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 18:22:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 18:22:49,943 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-10-14 18:22:49,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:22:49,944 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 18:22:49,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:22:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 18:22:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 18:22:49,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:49,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:22:49,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:22:49,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:49,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:49,946 INFO L82 PathProgramCache]: Analyzing trace with hash 31729808, now seen corresponding path program 1 times [2020-10-14 18:22:49,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:49,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761621183] [2020-10-14 18:22:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:50,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:50,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 18:22:50,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:22:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 18:22:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:50,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:22:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:22:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:22:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:22:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:50,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:22:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:50,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:22:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:22:50,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:22:50,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761621183] [2020-10-14 18:22:50,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:22:50,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:22:50,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879691880] [2020-10-14 18:22:50,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:22:50,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:50,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:22:50,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:22:50,587 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-10-14 18:22:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:22:50,971 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-14 18:22:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:22:50,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-14 18:22:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:22:50,974 INFO L225 Difference]: With dead ends: 43 [2020-10-14 18:22:50,974 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 18:22:50,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:22:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 18:22:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-10-14 18:22:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:22:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-14 18:22:50,984 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 15 [2020-10-14 18:22:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:22:50,985 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-14 18:22:50,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:22:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-14 18:22:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 18:22:50,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:50,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:22:50,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:22:50,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash 457525806, now seen corresponding path program 2 times [2020-10-14 18:22:50,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:50,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118847208] [2020-10-14 18:22:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:51,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 18:22:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:22:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 18:22:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:51,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:22:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:22:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:22:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:51,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:22:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:51,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:22:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:22:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:22:51,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118847208] [2020-10-14 18:22:51,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:22:51,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:22:51,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967454601] [2020-10-14 18:22:51,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:22:51,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:51,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:22:51,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:22:51,514 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-10-14 18:22:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:22:51,865 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-14 18:22:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:22:51,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-14 18:22:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:22:51,869 INFO L225 Difference]: With dead ends: 39 [2020-10-14 18:22:51,869 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:22:51,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:22:51,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:22:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2020-10-14 18:22:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 18:22:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-14 18:22:51,877 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 17 [2020-10-14 18:22:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:22:51,877 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-14 18:22:51,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:22:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-14 18:22:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 18:22:51,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:51,878 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] [2020-10-14 18:22:51,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:22:51,879 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:51,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1454236359, now seen corresponding path program 1 times [2020-10-14 18:22:51,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:51,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712181563] [2020-10-14 18:22:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:52,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:52,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 18:22:52,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:22:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 18:22:52,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:52,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:22:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:22:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:22:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:52,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:22:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:52,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:22:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:22:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 18:22:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:22:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:22:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:52,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:22:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:22:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:22:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:22:52,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712181563] [2020-10-14 18:22:52,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:22:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:22:52,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34312281] [2020-10-14 18:22:52,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:22:52,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:22:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:22:52,728 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 12 states. [2020-10-14 18:22:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:22:53,588 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-14 18:22:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:22:53,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-14 18:22:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:22:53,590 INFO L225 Difference]: With dead ends: 48 [2020-10-14 18:22:53,590 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 18:22:53,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:22:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 18:22:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 18:22:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 18:22:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-14 18:22:53,598 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2020-10-14 18:22:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:22:53,598 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-14 18:22:53,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:22:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-14 18:22:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 18:22:53,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:22:53,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:22:53,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:22:53,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:22:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:22:53,601 INFO L82 PathProgramCache]: Analyzing trace with hash -744847771, now seen corresponding path program 2 times [2020-10-14 18:22:53,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:22:53,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632169579] [2020-10-14 18:22:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:22:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 18:22:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:22:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-14 18:22:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:54,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:54,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:22:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:22:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 18:22:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 18:22:54,801 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 18:22:55,089 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-14 18:22:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:22:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:55,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:22:55,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:22:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:55,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:22:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 18:22:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:22:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:22:55,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:22:55,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:22:55,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:22:55,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 18:22:55,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:22:55,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:22:55,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:22:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:22:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:22:55,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:22:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:22:55,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632169579] [2020-10-14 18:22:55,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:22:55,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:22:55,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454974234] [2020-10-14 18:22:55,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:22:55,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:22:55,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:22:55,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:22:55,392 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 16 states. [2020-10-14 18:22:56,496 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-14 18:22:57,083 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-14 18:22:57,732 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-14 18:22:58,142 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 18:22:58,401 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-14 18:22:58,905 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-14 18:22:59,733 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-14 18:23:00,358 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-14 18:23:00,818 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-14 18:23:01,636 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-14 18:23:01,911 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-14 18:23:02,807 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-14 18:23:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:23:02,870 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-14 18:23:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:23:02,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-14 18:23:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:23:02,875 INFO L225 Difference]: With dead ends: 49 [2020-10-14 18:23:02,876 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 18:23:02,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:23:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 18:23:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-14 18:23:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 18:23:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-14 18:23:02,884 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2020-10-14 18:23:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:23:02,884 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-14 18:23:02,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:23:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-14 18:23:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:23:02,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:23:02,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:23:02,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:23:02,886 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:23:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:23:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash -940787069, now seen corresponding path program 3 times [2020-10-14 18:23:02,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:23:02,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342599466] [2020-10-14 18:23:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:23:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-14 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:03,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:23:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:23:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 18:23:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:23:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:04,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:23:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:23:04,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:04,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:23:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:23:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:23:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:04,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:04,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:04,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:23:04,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:04,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:23:04,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342599466] [2020-10-14 18:23:04,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:23:04,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:23:04,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322639299] [2020-10-14 18:23:04,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:23:04,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:23:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:23:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:23:04,034 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 13 states. [2020-10-14 18:23:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:23:04,659 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-10-14 18:23:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:23:04,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-14 18:23:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:23:04,662 INFO L225 Difference]: With dead ends: 42 [2020-10-14 18:23:04,662 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 18:23:04,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:23:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 18:23:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-14 18:23:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:23:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-14 18:23:04,683 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2020-10-14 18:23:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:23:04,684 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-14 18:23:04,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:23:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-14 18:23:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 18:23:04,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:23:04,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:23:04,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:23:04,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:23:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:23:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash 344641978, now seen corresponding path program 4 times [2020-10-14 18:23:04,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:23:04,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215588525] [2020-10-14 18:23:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:23:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:09,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:09,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 18:23:09,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 18:23:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:23:09,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:09,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:23:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:23:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 18:23:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:23:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:10,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:23:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:23:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:10,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:23:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:23:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:10,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:23:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:23:10,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:10,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:10,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:23:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:10,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:10,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:10,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:23:10,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:10,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:23:10,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215588525] [2020-10-14 18:23:10,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:23:10,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:23:10,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465779146] [2020-10-14 18:23:10,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:23:10,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:23:10,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:23:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:23:10,112 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-10-14 18:23:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:23:10,744 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-10-14 18:23:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:23:10,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-14 18:23:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:23:10,746 INFO L225 Difference]: With dead ends: 77 [2020-10-14 18:23:10,748 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 18:23:10,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:23:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 18:23:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2020-10-14 18:23:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 18:23:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-14 18:23:10,765 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 35 [2020-10-14 18:23:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:23:10,767 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-14 18:23:10,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:23:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-14 18:23:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 18:23:10,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:23:10,771 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:23:10,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:23:10,772 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:23:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:23:10,772 INFO L82 PathProgramCache]: Analyzing trace with hash 830011480, now seen corresponding path program 5 times [2020-10-14 18:23:10,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:23:10,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902352698] [2020-10-14 18:23:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:23:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:10,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 18:23:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:23:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-14 18:23:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:15,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:23:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:23:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 18:23:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:23:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:23:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:23:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:23:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:16,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:16,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:16,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:23:16,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:16,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:23:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:23:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:16,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:23:16,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:16,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:23:16,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902352698] [2020-10-14 18:23:16,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:23:16,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:23:16,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812888786] [2020-10-14 18:23:16,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:23:16,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:23:16,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:23:16,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:23:16,223 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 16 states. [2020-10-14 18:23:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:23:16,867 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-10-14 18:23:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:23:16,868 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 18:23:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:23:16,869 INFO L225 Difference]: With dead ends: 71 [2020-10-14 18:23:16,869 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 18:23:16,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:23:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 18:23:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-10-14 18:23:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 18:23:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-14 18:23:16,885 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 37 [2020-10-14 18:23:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:23:16,885 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-14 18:23:16,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:23:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-14 18:23:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 18:23:16,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:23:16,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:23:16,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:23:16,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:23:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:23:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash -472530447, now seen corresponding path program 6 times [2020-10-14 18:23:16,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:23:16,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842497297] [2020-10-14 18:23:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:23:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:16,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:21,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:21,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:23:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 18:23:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:23:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:23:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:23:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:23:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:22,383 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-14 18:23:22,591 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-14 18:23:23,064 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-14 18:23:23,480 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2020-10-14 18:23:23,969 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-14 18:23:24,769 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-14 18:23:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:23:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:24,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:23:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:23:24,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:24,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:23:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 18:23:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:24,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:24,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 18:23:24,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:24,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:24,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 18:23:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:24,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:24,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:24,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 18:23:24,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:24,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:23:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:23:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:23:25,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:25,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:23:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:23:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:23:25,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842497297] [2020-10-14 18:23:25,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:23:25,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:23:25,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493219747] [2020-10-14 18:23:25,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:23:25,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:23:25,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:23:25,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:23:25,102 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 17 states. [2020-10-14 18:23:25,905 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 18:23:26,417 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 18:23:26,854 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-14 18:23:27,186 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 18:23:27,471 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-14 18:23:27,788 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 18:23:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:23:28,124 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-10-14 18:23:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:23:28,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2020-10-14 18:23:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:23:28,126 INFO L225 Difference]: With dead ends: 81 [2020-10-14 18:23:28,126 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 18:23:28,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:23:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 18:23:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 18:23:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 18:23:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-10-14 18:23:28,137 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 43 [2020-10-14 18:23:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:23:28,138 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-10-14 18:23:28,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:23:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-10-14 18:23:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:23:28,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:23:28,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:23:28,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:23:28,140 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:23:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:23:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash -579179889, now seen corresponding path program 7 times [2020-10-14 18:23:28,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:23:28,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945379700] [2020-10-14 18:23:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:23:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:28,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 18:23:33,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 18:23:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:23:33,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:33,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:33,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:23:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:23:33,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:23:33,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:23:34,177 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-14 18:23:34,468 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-14 18:23:35,165 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-14 18:23:36,018 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-10-14 18:23:37,511 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2020-10-14 18:23:38,519 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 98 [2020-10-14 18:23:39,503 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2020-10-14 18:23:41,655 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 104 [2020-10-14 18:23:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:23:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:43,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:43,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:23:43,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:23:43,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:43,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:43,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:23:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:23:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:43,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 18:23:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:43,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:23:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:43,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:43,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 18:23:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:43,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:23:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:23:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:43,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 18:23:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:23:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:23:43,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:23:43,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:23:43,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:23:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:23:43,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:23:43,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:23:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:23:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:23:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:23:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:23:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:23:43,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945379700] [2020-10-14 18:23:43,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:23:43,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:23:43,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908880168] [2020-10-14 18:23:43,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:23:43,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:23:43,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:23:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:23:43,667 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 19 states. [2020-10-14 18:23:44,140 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 38 [2020-10-14 18:23:44,488 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 40 [2020-10-14 18:23:47,524 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2020-10-14 18:23:50,555 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 139 DAG size of output: 129 [2020-10-14 18:23:52,119 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 18:23:53,312 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-14 18:23:54,380 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 18:23:57,060 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-10-14 18:23:59,896 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 147 DAG size of output: 138 [2020-10-14 18:24:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:24:00,193 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-14 18:24:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:24:00,195 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-10-14 18:24:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:24:00,196 INFO L225 Difference]: With dead ends: 83 [2020-10-14 18:24:00,196 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 18:24:00,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:24:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 18:24:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 18:24:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 18:24:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-14 18:24:00,208 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2020-10-14 18:24:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:24:00,209 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-14 18:24:00,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:24:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-14 18:24:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 18:24:00,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:24:00,210 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:24:00,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:24:00,210 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:24:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:24:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash 9921453, now seen corresponding path program 8 times [2020-10-14 18:24:00,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:24:00,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077157610] [2020-10-14 18:24:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:24:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:00,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:01,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:01,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:05,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:05,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:24:05,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:24:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:24:07,744 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-14 18:24:07,994 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 18:24:08,537 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-14 18:24:09,409 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-14 18:24:11,017 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2020-10-14 18:24:13,552 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 127 DAG size of output: 85 [2020-10-14 18:24:17,703 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 166 DAG size of output: 98 [2020-10-14 18:24:19,871 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 157 DAG size of output: 98 [2020-10-14 18:24:22,769 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 165 DAG size of output: 99 [2020-10-14 18:24:27,968 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 160 DAG size of output: 98 [2020-10-14 18:24:30,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:24:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:30,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:30,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:24:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:24:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 18:24:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:30,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:24:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 18:24:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:30,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:24:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:24:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:24:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:24:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:30,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:24:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 18:24:30,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:30,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:24:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:24:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:24:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:24:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:24:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:24:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:24:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:24:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:30,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:24:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:24:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:24:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:24:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:24:30,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077157610] [2020-10-14 18:24:30,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:24:30,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:24:30,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080322980] [2020-10-14 18:24:30,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:24:30,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:24:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:24:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:24:30,693 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-10-14 18:24:31,568 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 44 [2020-10-14 18:24:32,666 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 65 [2020-10-14 18:24:33,472 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 57 [2020-10-14 18:24:38,997 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2020-10-14 18:24:40,547 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-14 18:24:47,294 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 119 DAG size of output: 114 [2020-10-14 18:24:53,659 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 154 DAG size of output: 140 [2020-10-14 18:24:57,606 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 18:25:00,657 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 119 [2020-10-14 18:25:03,413 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 18:25:09,540 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 125 [2020-10-14 18:25:17,666 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2020-10-14 18:25:23,241 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 18:25:28,793 WARN L193 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 125 DAG size of output: 120 [2020-10-14 18:25:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:29,865 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-10-14 18:25:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:25:29,871 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 47 [2020-10-14 18:25:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:29,873 INFO L225 Difference]: With dead ends: 85 [2020-10-14 18:25:29,873 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 18:25:29,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 61.2s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:25:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 18:25:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 18:25:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:25:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-14 18:25:29,887 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2020-10-14 18:25:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:29,888 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-14 18:25:29,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:25:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-14 18:25:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:25:29,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:29,889 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:29,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:25:29,890 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:29,890 INFO L82 PathProgramCache]: Analyzing trace with hash -799371957, now seen corresponding path program 9 times [2020-10-14 18:25:29,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:29,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912845262] [2020-10-14 18:25:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:25:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:25:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 18:25:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:39,497 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-14 18:25:39,906 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-14 18:25:40,792 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-14 18:25:42,289 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-14 18:25:44,577 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2020-10-14 18:25:47,542 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2020-10-14 18:25:54,093 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 137 DAG size of output: 75 [2020-10-14 18:26:00,930 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 140 DAG size of output: 78 [2020-10-14 18:26:10,895 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 180 DAG size of output: 87 [2020-10-14 18:26:14,175 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 145 DAG size of output: 80 [2020-10-14 18:26:19,211 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 152 DAG size of output: 82 [2020-10-14 18:26:37,699 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 152 DAG size of output: 82