/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/eca-rers2012/Problem11_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:04:31,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:04:31,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:04:31,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:04:31,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:04:31,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:04:31,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:04:31,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:04:31,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:04:31,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:04:31,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:04:31,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:04:31,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:04:31,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:04:31,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:04:31,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:04:31,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:04:31,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:04:31,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:04:31,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:04:31,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:04:31,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:04:31,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:04:31,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:04:31,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:04:31,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:04:31,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:04:31,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:04:31,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:04:31,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:04:31,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:04:31,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:04:31,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:04:31,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:04:31,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:04:31,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:04:31,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:04:31,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:04:31,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:04:31,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:04:31,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:04:31,242 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 21:04:31,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:04:31,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:04:31,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:04:31,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:04:31,287 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:04:31,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:04:31,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:04:31,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:04:31,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:04:31,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:04:31,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:04:31,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:04:31,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:04:31,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:04:31,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:04:31,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:04:31,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:04:31,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:04:31,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:04:31,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:04:31,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:04:31,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:04:31,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:04:31,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:04:31,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:04:31,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:04:31,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:04:31,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:04:31,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:04:31,294 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 21:04:31,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:04:31,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:04:31,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:04:31,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:04:31,689 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:04:31,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-14 21:04:31,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202925753/3d5a2b5feb49421bb3df47f6576d8cc3/FLAG3b3a52857 [2020-10-14 21:04:32,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:04:32,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label56.c [2020-10-14 21:04:32,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202925753/3d5a2b5feb49421bb3df47f6576d8cc3/FLAG3b3a52857 [2020-10-14 21:04:32,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202925753/3d5a2b5feb49421bb3df47f6576d8cc3 [2020-10-14 21:04:32,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:04:32,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:04:32,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:04:32,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:04:32,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:04:32,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:04:32" (1/1) ... [2020-10-14 21:04:32,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:32, skipping insertion in model container [2020-10-14 21:04:32,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:04:32" (1/1) ... [2020-10-14 21:04:32,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:04:32,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:04:33,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:04:33,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:04:33,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:04:33,702 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:04:33,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33 WrapperNode [2020-10-14 21:04:33,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:04:33,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:04:33,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:04:33,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:04:33,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (1/1) ... [2020-10-14 21:04:33,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:04:33,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:04:33,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:04:33,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:04:33,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (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 21:04:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:04:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:04:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:04:33,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:04:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:04:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:04:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:04:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:04:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:04:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:04:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:04:35,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:04:35,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:04:35,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:04:35 BoogieIcfgContainer [2020-10-14 21:04:35,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:04:35,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:04:35,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:04:35,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:04:35,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:04:32" (1/3) ... [2020-10-14 21:04:35,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd8b86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:04:35, skipping insertion in model container [2020-10-14 21:04:35,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:04:33" (2/3) ... [2020-10-14 21:04:35,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd8b86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:04:35, skipping insertion in model container [2020-10-14 21:04:35,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:04:35" (3/3) ... [2020-10-14 21:04:35,646 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label56.c [2020-10-14 21:04:35,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:04:35,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:04:35,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:04:35,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:04:35,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:04:35,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:04:35,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:04:35,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:04:35,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:04:35,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:04:35,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:04:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 21:04:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 21:04:35,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:35,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:35,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:35,789 INFO L82 PathProgramCache]: Analyzing trace with hash -223950182, now seen corresponding path program 1 times [2020-10-14 21:04:35,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:35,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255542886] [2020-10-14 21:04:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:36,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:36,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 21:04:36,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 21:04:36,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:36,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 21:04:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:04:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:36,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:36,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:04:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:36,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:36,608 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 21:04:36,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255542886] [2020-10-14 21:04:36,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:04:36,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:04:36,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780404662] [2020-10-14 21:04:36,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:04:36,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:36,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:04:36,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:04:36,641 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 21:04:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:39,206 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-14 21:04:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:04:39,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 21:04:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:39,231 INFO L225 Difference]: With dead ends: 788 [2020-10-14 21:04:39,232 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 21:04:39,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:04:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 21:04:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-14 21:04:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-14 21:04:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-14 21:04:39,329 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 47 [2020-10-14 21:04:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:39,330 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-14 21:04:39,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:04:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-14 21:04:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 21:04:39,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:39,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:39,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:04:39,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:39,338 INFO L82 PathProgramCache]: Analyzing trace with hash 93548442, now seen corresponding path program 1 times [2020-10-14 21:04:39,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:39,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336239432] [2020-10-14 21:04:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:04:40,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-14 21:04:40,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:40,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:04:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:40,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:40,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:40,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:04:40,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:40,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:40,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:04:41,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:04:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:41,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:04:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:04:41,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336239432] [2020-10-14 21:04:41,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:04:41,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:04:41,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947229077] [2020-10-14 21:04:41,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:41,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:41,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:41,247 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-14 21:04:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:43,776 INFO L93 Difference]: Finished difference Result 1272 states and 1867 transitions. [2020-10-14 21:04:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:04:43,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-14 21:04:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:43,785 INFO L225 Difference]: With dead ends: 1272 [2020-10-14 21:04:43,785 INFO L226 Difference]: Without dead ends: 853 [2020-10-14 21:04:43,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:04:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-14 21:04:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 822. [2020-10-14 21:04:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-14 21:04:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1127 transitions. [2020-10-14 21:04:43,853 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1127 transitions. Word has length 119 [2020-10-14 21:04:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:43,853 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1127 transitions. [2020-10-14 21:04:43,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1127 transitions. [2020-10-14 21:04:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 21:04:43,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:43,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:43,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:04:43,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:43,862 INFO L82 PathProgramCache]: Analyzing trace with hash 856190846, now seen corresponding path program 1 times [2020-10-14 21:04:43,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:43,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462640541] [2020-10-14 21:04:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 21:04:45,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-14 21:04:45,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:45,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:04:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:04:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:04:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:45,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:04:45,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:45,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:04:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:04:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:45,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:04:45,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 21:04:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:45,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:04:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:04:46,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462640541] [2020-10-14 21:04:46,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:04:46,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:04:46,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871215341] [2020-10-14 21:04:46,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:46,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:46,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:46,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:46,102 INFO L87 Difference]: Start difference. First operand 822 states and 1127 transitions. Second operand 7 states. [2020-10-14 21:04:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:48,406 INFO L93 Difference]: Finished difference Result 1855 states and 2513 transitions. [2020-10-14 21:04:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:04:48,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 21:04:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:48,417 INFO L225 Difference]: With dead ends: 1855 [2020-10-14 21:04:48,417 INFO L226 Difference]: Without dead ends: 1039 [2020-10-14 21:04:48,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:04:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-14 21:04:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1022. [2020-10-14 21:04:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-10-14 21:04:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1343 transitions. [2020-10-14 21:04:48,479 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1343 transitions. Word has length 121 [2020-10-14 21:04:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:48,481 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1343 transitions. [2020-10-14 21:04:48,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1343 transitions. [2020-10-14 21:04:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 21:04:48,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:48,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:48,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:04:48,496 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:48,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:48,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2143006642, now seen corresponding path program 1 times [2020-10-14 21:04:48,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944717741] [2020-10-14 21:04:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 21:04:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 21:04:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:48,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:04:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 21:04:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:04:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:49,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:49,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:49,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:04:49,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:49,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:49,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:49,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:04:49,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:04:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:49,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:04:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:04:49,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944717741] [2020-10-14 21:04:49,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:49,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:04:49,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471467009] [2020-10-14 21:04:49,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:04:49,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:49,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:04:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:04:49,396 INFO L87 Difference]: Start difference. First operand 1022 states and 1343 transitions. Second operand 5 states. [2020-10-14 21:04:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:51,536 INFO L93 Difference]: Finished difference Result 1881 states and 2669 transitions. [2020-10-14 21:04:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:04:51,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 21:04:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:51,548 INFO L225 Difference]: With dead ends: 1881 [2020-10-14 21:04:51,548 INFO L226 Difference]: Without dead ends: 1447 [2020-10-14 21:04:51,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:04:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-10-14 21:04:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1430. [2020-10-14 21:04:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-10-14 21:04:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1917 transitions. [2020-10-14 21:04:51,618 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1917 transitions. Word has length 178 [2020-10-14 21:04:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:51,622 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1917 transitions. [2020-10-14 21:04:51,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:04:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1917 transitions. [2020-10-14 21:04:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 21:04:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:51,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:51,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:04:51,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 164628580, now seen corresponding path program 1 times [2020-10-14 21:04:51,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:51,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529853608] [2020-10-14 21:04:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 21:04:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:04:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-14 21:04:53,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:53,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 21:04:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:04:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:53,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:53,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:53,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:04:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:04:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:54,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:04:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:04:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:54,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:54,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:04:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:04:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:54,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:04:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:04:54,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529853608] [2020-10-14 21:04:54,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:54,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:04:54,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121642288] [2020-10-14 21:04:54,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:04:54,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:54,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:04:54,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:04:54,617 INFO L87 Difference]: Start difference. First operand 1430 states and 1917 transitions. Second operand 7 states. [2020-10-14 21:04:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:04:57,541 INFO L93 Difference]: Finished difference Result 3282 states and 4585 transitions. [2020-10-14 21:04:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:04:57,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 21:04:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:04:57,569 INFO L225 Difference]: With dead ends: 3282 [2020-10-14 21:04:57,569 INFO L226 Difference]: Without dead ends: 2046 [2020-10-14 21:04:57,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:04:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-14 21:04:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2024. [2020-10-14 21:04:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-10-14 21:04:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2622 transitions. [2020-10-14 21:04:57,660 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2622 transitions. Word has length 237 [2020-10-14 21:04:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:04:57,660 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2622 transitions. [2020-10-14 21:04:57,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:04:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2622 transitions. [2020-10-14 21:04:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 21:04:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:04:57,665 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:04:57,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:04:57,666 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:04:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:04:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash -736425896, now seen corresponding path program 1 times [2020-10-14 21:04:57,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:04:57,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486396811] [2020-10-14 21:04:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:04:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 21:04:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:04:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-14 21:04:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:04:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 21:04:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 21:04:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:04:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:04:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:04:58,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:04:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:04:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:58,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:58,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:04:58,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:04:58,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:58,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:04:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:04:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:04:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:04:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:04:59,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:04:59,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:04:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:04:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:04:59,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:04:59,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:04:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:04:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:04:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:04:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:04:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-14 21:04:59,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486396811] [2020-10-14 21:04:59,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:04:59,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:04:59,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247260952] [2020-10-14 21:04:59,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:04:59,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:04:59,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:04:59,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:04:59,114 INFO L87 Difference]: Start difference. First operand 2024 states and 2622 transitions. Second operand 5 states. [2020-10-14 21:05:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:01,513 INFO L93 Difference]: Finished difference Result 4475 states and 6087 transitions. [2020-10-14 21:05:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:01,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-14 21:05:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:01,538 INFO L225 Difference]: With dead ends: 4475 [2020-10-14 21:05:01,539 INFO L226 Difference]: Without dead ends: 3231 [2020-10-14 21:05:01,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-10-14 21:05:01,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3213. [2020-10-14 21:05:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2020-10-14 21:05:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4231 transitions. [2020-10-14 21:05:01,654 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4231 transitions. Word has length 247 [2020-10-14 21:05:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:01,655 INFO L479 AbstractCegarLoop]: Abstraction has 3213 states and 4231 transitions. [2020-10-14 21:05:01,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:05:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4231 transitions. [2020-10-14 21:05:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 21:05:01,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:01,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:01,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:05:01,661 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1840148776, now seen corresponding path program 1 times [2020-10-14 21:05:01,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:01,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767447969] [2020-10-14 21:05:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:04,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:04,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 21:05:04,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:04,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-14 21:05:04,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:04,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-14 21:05:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:05:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:05:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:04,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:04,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:04,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 21:05:04,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:04,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:05:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:04,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:04,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:04,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 21:05:04,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:05:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:04,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:05:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:05:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:05:05,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767447969] [2020-10-14 21:05:05,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:05,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873667374] [2020-10-14 21:05:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:05,009 INFO L87 Difference]: Start difference. First operand 3213 states and 4231 transitions. Second operand 7 states. [2020-10-14 21:05:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:08,005 INFO L93 Difference]: Finished difference Result 7868 states and 10693 transitions. [2020-10-14 21:05:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:05:08,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 21:05:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:08,029 INFO L225 Difference]: With dead ends: 7868 [2020-10-14 21:05:08,029 INFO L226 Difference]: Without dead ends: 4262 [2020-10-14 21:05:08,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-10-14 21:05:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 4211. [2020-10-14 21:05:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4211 states. [2020-10-14 21:05:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5363 transitions. [2020-10-14 21:05:08,171 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5363 transitions. Word has length 247 [2020-10-14 21:05:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:08,171 INFO L479 AbstractCegarLoop]: Abstraction has 4211 states and 5363 transitions. [2020-10-14 21:05:08,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5363 transitions. [2020-10-14 21:05:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 21:05:08,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:08,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:08,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:05:08,179 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1483298425, now seen corresponding path program 1 times [2020-10-14 21:05:08,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:08,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437635852] [2020-10-14 21:05:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:05:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-14 21:05:09,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:09,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 21:05:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 21:05:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:09,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:05:09,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:09,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:09,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:05:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 21:05:09,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:09,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:05:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 21:05:09,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437635852] [2020-10-14 21:05:09,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:09,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:05:09,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6743652] [2020-10-14 21:05:09,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:05:09,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:09,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:05:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:05:09,632 INFO L87 Difference]: Start difference. First operand 4211 states and 5363 transitions. Second operand 5 states. [2020-10-14 21:05:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:12,118 INFO L93 Difference]: Finished difference Result 9406 states and 12337 transitions. [2020-10-14 21:05:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:05:12,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-14 21:05:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:12,142 INFO L225 Difference]: With dead ends: 9406 [2020-10-14 21:05:12,142 INFO L226 Difference]: Without dead ends: 5389 [2020-10-14 21:05:12,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2020-10-14 21:05:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 5371. [2020-10-14 21:05:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5371 states. [2020-10-14 21:05:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 6841 transitions. [2020-10-14 21:05:12,277 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 6841 transitions. Word has length 274 [2020-10-14 21:05:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:12,277 INFO L479 AbstractCegarLoop]: Abstraction has 5371 states and 6841 transitions. [2020-10-14 21:05:12,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:05:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 6841 transitions. [2020-10-14 21:05:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-14 21:05:12,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:12,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:12,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:05:12,288 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1212413121, now seen corresponding path program 1 times [2020-10-14 21:05:12,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811322428] [2020-10-14 21:05:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:13,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 21:05:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:13,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-14 21:05:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:05:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:05:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:13,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:13,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:13,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:13,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:13,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:05:13,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:05:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:13,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:05:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:05:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:14,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:05:14,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:05:14,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:14,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:05:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:05:14,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811322428] [2020-10-14 21:05:14,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:14,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:14,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439488186] [2020-10-14 21:05:14,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:14,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:14,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:14,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:14,182 INFO L87 Difference]: Start difference. First operand 5371 states and 6841 transitions. Second operand 7 states. [2020-10-14 21:05:17,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:17,160 INFO L93 Difference]: Finished difference Result 13354 states and 18258 transitions. [2020-10-14 21:05:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:05:17,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-14 21:05:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:17,203 INFO L225 Difference]: With dead ends: 13354 [2020-10-14 21:05:17,203 INFO L226 Difference]: Without dead ends: 8177 [2020-10-14 21:05:17,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2020-10-14 21:05:17,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8097. [2020-10-14 21:05:17,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8097 states. [2020-10-14 21:05:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 10260 transitions. [2020-10-14 21:05:17,427 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 10260 transitions. Word has length 286 [2020-10-14 21:05:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:17,428 INFO L479 AbstractCegarLoop]: Abstraction has 8097 states and 10260 transitions. [2020-10-14 21:05:17,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 10260 transitions. [2020-10-14 21:05:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-14 21:05:17,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:17,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:17,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:05:17,449 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash 866257464, now seen corresponding path program 1 times [2020-10-14 21:05:17,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:17,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495392690] [2020-10-14 21:05:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-14 21:05:20,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-14 21:05:20,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:20,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 21:05:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:05:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:20,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:05:20,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:20,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:20,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 21:05:20,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:20,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:20,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:05:20,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 21:05:20,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:05:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 21:05:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:20,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:20,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 21:05:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:20,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:05:20,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:20,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:05:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:05:20,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495392690] [2020-10-14 21:05:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:20,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:20,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038340507] [2020-10-14 21:05:20,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:20,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:20,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:20,917 INFO L87 Difference]: Start difference. First operand 8097 states and 10260 transitions. Second operand 7 states. [2020-10-14 21:05:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:23,968 INFO L93 Difference]: Finished difference Result 16983 states and 22498 transitions. [2020-10-14 21:05:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:05:23,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-14 21:05:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:24,033 INFO L225 Difference]: With dead ends: 16983 [2020-10-14 21:05:24,033 INFO L226 Difference]: Without dead ends: 9655 [2020-10-14 21:05:24,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2020-10-14 21:05:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 9409. [2020-10-14 21:05:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9409 states. [2020-10-14 21:05:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9409 states to 9409 states and 11966 transitions. [2020-10-14 21:05:24,301 INFO L78 Accepts]: Start accepts. Automaton has 9409 states and 11966 transitions. Word has length 361 [2020-10-14 21:05:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:24,301 INFO L479 AbstractCegarLoop]: Abstraction has 9409 states and 11966 transitions. [2020-10-14 21:05:24,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9409 states and 11966 transitions. [2020-10-14 21:05:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-14 21:05:24,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:24,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:24,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:05:24,326 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:24,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2129720991, now seen corresponding path program 1 times [2020-10-14 21:05:24,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:24,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97726565] [2020-10-14 21:05:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:25,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-14 21:05:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-14 21:05:25,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:25,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:05:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 21:05:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 21:05:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:26,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:05:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 21:05:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:26,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:05:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:05:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:05:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 21:05:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:26,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:05:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 21:05:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 210 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:05:26,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97726565] [2020-10-14 21:05:26,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:26,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:05:26,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638508061] [2020-10-14 21:05:26,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:05:26,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:26,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:05:26,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:05:26,719 INFO L87 Difference]: Start difference. First operand 9409 states and 11966 transitions. Second operand 8 states. [2020-10-14 21:05:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:29,539 INFO L93 Difference]: Finished difference Result 19040 states and 24863 transitions. [2020-10-14 21:05:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:05:29,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-10-14 21:05:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:29,587 INFO L225 Difference]: With dead ends: 19040 [2020-10-14 21:05:29,588 INFO L226 Difference]: Without dead ends: 11538 [2020-10-14 21:05:29,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11538 states. [2020-10-14 21:05:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11538 to 11521. [2020-10-14 21:05:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11521 states. [2020-10-14 21:05:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 14959 transitions. [2020-10-14 21:05:29,829 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 14959 transitions. Word has length 360 [2020-10-14 21:05:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:29,830 INFO L479 AbstractCegarLoop]: Abstraction has 11521 states and 14959 transitions. [2020-10-14 21:05:29,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:05:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 14959 transitions. [2020-10-14 21:05:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 21:05:29,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:29,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:29,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:05:29,851 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:29,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash 147185471, now seen corresponding path program 1 times [2020-10-14 21:05:29,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:29,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146038621] [2020-10-14 21:05:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:31,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-14 21:05:31,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:31,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-14 21:05:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:31,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 21:05:31,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:05:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:05:31,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:31,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:31,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:31,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:31,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:05:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:05:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:31,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:05:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:31,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:05:31,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:05:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:31,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:05:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:05:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:05:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 21:05:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:32,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:05:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:05:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 21:05:32,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146038621] [2020-10-14 21:05:32,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:32,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:32,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346684872] [2020-10-14 21:05:32,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:32,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:32,212 INFO L87 Difference]: Start difference. First operand 11521 states and 14959 transitions. Second operand 7 states. [2020-10-14 21:05:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:35,977 INFO L93 Difference]: Finished difference Result 22927 states and 31995 transitions. [2020-10-14 21:05:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:05:35,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-14 21:05:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:36,036 INFO L225 Difference]: With dead ends: 22927 [2020-10-14 21:05:36,036 INFO L226 Difference]: Without dead ends: 13332 [2020-10-14 21:05:36,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13332 states. [2020-10-14 21:05:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13332 to 12867. [2020-10-14 21:05:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12867 states. [2020-10-14 21:05:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12867 states to 12867 states and 16518 transitions. [2020-10-14 21:05:36,431 INFO L78 Accepts]: Start accepts. Automaton has 12867 states and 16518 transitions. Word has length 367 [2020-10-14 21:05:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:36,432 INFO L479 AbstractCegarLoop]: Abstraction has 12867 states and 16518 transitions. [2020-10-14 21:05:36,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12867 states and 16518 transitions. [2020-10-14 21:05:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 21:05:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:36,452 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:36,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:05:36,452 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1805738740, now seen corresponding path program 1 times [2020-10-14 21:05:36,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:36,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276394509] [2020-10-14 21:05:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:37,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-14 21:05:37,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:05:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:38,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:05:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:05:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:38,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:05:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:38,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:05:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-14 21:05:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 21:05:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 204 proven. 82 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:05:38,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276394509] [2020-10-14 21:05:38,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:38,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:38,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144832015] [2020-10-14 21:05:38,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:38,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:38,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:38,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:38,489 INFO L87 Difference]: Start difference. First operand 12867 states and 16518 transitions. Second operand 7 states. [2020-10-14 21:05:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:41,104 INFO L93 Difference]: Finished difference Result 27424 states and 35878 transitions. [2020-10-14 21:05:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:05:41,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-14 21:05:41,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:41,149 INFO L225 Difference]: With dead ends: 27424 [2020-10-14 21:05:41,150 INFO L226 Difference]: Without dead ends: 16483 [2020-10-14 21:05:41,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:05:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16483 states. [2020-10-14 21:05:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16483 to 16461. [2020-10-14 21:05:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16461 states. [2020-10-14 21:05:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16461 states to 16461 states and 21116 transitions. [2020-10-14 21:05:41,451 INFO L78 Accepts]: Start accepts. Automaton has 16461 states and 21116 transitions. Word has length 369 [2020-10-14 21:05:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:41,452 INFO L479 AbstractCegarLoop]: Abstraction has 16461 states and 21116 transitions. [2020-10-14 21:05:41,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16461 states and 21116 transitions. [2020-10-14 21:05:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 21:05:41,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:41,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:41,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:05:41,470 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash 454960349, now seen corresponding path program 1 times [2020-10-14 21:05:41,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:41,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147118144] [2020-10-14 21:05:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:46,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 21:05:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:05:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4869 [2020-10-14 21:05:46,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:05:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:05:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-14 21:05:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:46,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:46,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:46,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:46,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:05:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:46,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:05:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:46,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:46,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:05:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:05:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:46,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:05:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:05:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:05:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:05:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:05:47,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:47,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:05:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:05:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:47,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:47,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:05:47,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:05:47,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 308 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:05:47,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147118144] [2020-10-14 21:05:47,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:47,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:05:47,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452947243] [2020-10-14 21:05:47,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:05:47,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:05:47,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:05:47,538 INFO L87 Difference]: Start difference. First operand 16461 states and 21116 transitions. Second operand 7 states. [2020-10-14 21:05:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:49,849 INFO L93 Difference]: Finished difference Result 27686 states and 35757 transitions. [2020-10-14 21:05:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:05:49,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 21:05:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:49,891 INFO L225 Difference]: With dead ends: 27686 [2020-10-14 21:05:49,892 INFO L226 Difference]: Without dead ends: 13529 [2020-10-14 21:05:49,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:05:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2020-10-14 21:05:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 13521. [2020-10-14 21:05:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13521 states. [2020-10-14 21:05:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 15971 transitions. [2020-10-14 21:05:50,322 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 15971 transitions. Word has length 370 [2020-10-14 21:05:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:50,324 INFO L479 AbstractCegarLoop]: Abstraction has 13521 states and 15971 transitions. [2020-10-14 21:05:50,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:05:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 15971 transitions. [2020-10-14 21:05:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-14 21:05:50,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:50,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:50,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 21:05:50,348 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:50,350 INFO L82 PathProgramCache]: Analyzing trace with hash 718214251, now seen corresponding path program 1 times [2020-10-14 21:05:50,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:50,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837302171] [2020-10-14 21:05:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3181 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:05:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-14 21:05:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:05:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:05:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:53,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:53,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:53,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:05:53,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:05:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:05:53,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:05:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:05:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:53,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:05:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:53,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-14 21:05:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:05:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:05:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 21:05:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:05:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 307 proven. 41 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 21:05:54,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837302171] [2020-10-14 21:05:54,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:05:54,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:05:54,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260596029] [2020-10-14 21:05:54,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:05:54,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:05:54,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:05:54,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:05:54,239 INFO L87 Difference]: Start difference. First operand 13521 states and 15971 transitions. Second operand 6 states. [2020-10-14 21:05:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:05:56,280 INFO L93 Difference]: Finished difference Result 16430 states and 19383 transitions. [2020-10-14 21:05:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:05:56,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 409 [2020-10-14 21:05:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:05:56,315 INFO L225 Difference]: With dead ends: 16430 [2020-10-14 21:05:56,315 INFO L226 Difference]: Without dead ends: 16428 [2020-10-14 21:05:56,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:05:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16428 states. [2020-10-14 21:05:56,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16428 to 16411. [2020-10-14 21:05:56,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16411 states. [2020-10-14 21:05:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16411 states to 16411 states and 19350 transitions. [2020-10-14 21:05:56,625 INFO L78 Accepts]: Start accepts. Automaton has 16411 states and 19350 transitions. Word has length 409 [2020-10-14 21:05:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:05:56,628 INFO L479 AbstractCegarLoop]: Abstraction has 16411 states and 19350 transitions. [2020-10-14 21:05:56,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:05:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16411 states and 19350 transitions. [2020-10-14 21:05:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 21:05:56,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:05:56,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:05:56,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 21:05:56,656 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:05:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:05:56,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1283469083, now seen corresponding path program 1 times [2020-10-14 21:05:56,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:05:56,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380248606] [2020-10-14 21:05:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:05:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:05:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:56,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:05:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:01,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 21:06:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-14 21:06:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:01,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:06:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:01,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:02,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:06:02,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 21:06:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:02,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:06:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:02,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 21:06:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:06:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-14 21:06:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:02,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 21:06:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-14 21:06:02,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380248606] [2020-10-14 21:06:02,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:02,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:06:02,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389143687] [2020-10-14 21:06:02,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 21:06:02,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:02,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 21:06:02,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:06:02,761 INFO L87 Difference]: Start difference. First operand 16411 states and 19350 transitions. Second operand 9 states. [2020-10-14 21:06:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:07,862 INFO L93 Difference]: Finished difference Result 36491 states and 43362 transitions. [2020-10-14 21:06:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:06:07,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 410 [2020-10-14 21:06:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:07,919 INFO L225 Difference]: With dead ends: 36491 [2020-10-14 21:06:07,920 INFO L226 Difference]: Without dead ends: 22384 [2020-10-14 21:06:07,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-14 21:06:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22384 states. [2020-10-14 21:06:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22384 to 21615. [2020-10-14 21:06:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21615 states. [2020-10-14 21:06:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21615 states to 21615 states and 25428 transitions. [2020-10-14 21:06:08,437 INFO L78 Accepts]: Start accepts. Automaton has 21615 states and 25428 transitions. Word has length 410 [2020-10-14 21:06:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:08,438 INFO L479 AbstractCegarLoop]: Abstraction has 21615 states and 25428 transitions. [2020-10-14 21:06:08,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 21:06:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21615 states and 25428 transitions. [2020-10-14 21:06:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-14 21:06:08,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:08,480 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:08,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 21:06:08,481 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:08,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1493780273, now seen corresponding path program 1 times [2020-10-14 21:06:08,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:08,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229545562] [2020-10-14 21:06:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-14 21:06:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3527 [2020-10-14 21:06:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:06:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-14 21:06:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 21:06:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:06:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:06:12,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 21:06:12,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:12,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:06:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-14 21:06:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 21:06:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 21:06:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:12,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:12,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 21:06:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 342 proven. 17 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 21:06:13,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229545562] [2020-10-14 21:06:13,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:13,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:06:13,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132834088] [2020-10-14 21:06:13,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:06:13,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:13,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:06:13,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:06:13,151 INFO L87 Difference]: Start difference. First operand 21615 states and 25428 transitions. Second operand 8 states. [2020-10-14 21:06:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:16,242 INFO L93 Difference]: Finished difference Result 46307 states and 54380 transitions. [2020-10-14 21:06:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:06:16,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 453 [2020-10-14 21:06:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:16,282 INFO L225 Difference]: With dead ends: 46307 [2020-10-14 21:06:16,283 INFO L226 Difference]: Without dead ends: 24867 [2020-10-14 21:06:16,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24867 states. [2020-10-14 21:06:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24867 to 23332. [2020-10-14 21:06:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23332 states. [2020-10-14 21:06:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23332 states to 23332 states and 27407 transitions. [2020-10-14 21:06:16,715 INFO L78 Accepts]: Start accepts. Automaton has 23332 states and 27407 transitions. Word has length 453 [2020-10-14 21:06:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:16,715 INFO L479 AbstractCegarLoop]: Abstraction has 23332 states and 27407 transitions. [2020-10-14 21:06:16,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:06:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23332 states and 27407 transitions. [2020-10-14 21:06:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 21:06:16,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:16,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:16,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 21:06:16,743 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:16,744 INFO L82 PathProgramCache]: Analyzing trace with hash 557037811, now seen corresponding path program 1 times [2020-10-14 21:06:16,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:16,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464516772] [2020-10-14 21:06:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:21,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:21,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-14 21:06:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:06:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 21:06:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:21,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:21,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:06:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:06:22,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:06:22,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:06:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 21:06:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:06:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:06:22,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:06:22,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:22,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-14 21:06:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:22,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 21:06:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 21:06:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:22,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 21:06:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 171 proven. 4 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2020-10-14 21:06:23,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464516772] [2020-10-14 21:06:23,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:23,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:06:23,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013436691] [2020-10-14 21:06:23,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:06:23,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:06:23,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:06:23,265 INFO L87 Difference]: Start difference. First operand 23332 states and 27407 transitions. Second operand 5 states. [2020-10-14 21:06:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:25,380 INFO L93 Difference]: Finished difference Result 25800 states and 30268 transitions. [2020-10-14 21:06:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:06:25,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-14 21:06:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:25,427 INFO L225 Difference]: With dead ends: 25800 [2020-10-14 21:06:25,427 INFO L226 Difference]: Without dead ends: 25798 [2020-10-14 21:06:25,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25798 states. [2020-10-14 21:06:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25798 to 24278. [2020-10-14 21:06:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24278 states. [2020-10-14 21:06:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24278 states to 24278 states and 28514 transitions. [2020-10-14 21:06:26,014 INFO L78 Accepts]: Start accepts. Automaton has 24278 states and 28514 transitions. Word has length 465 [2020-10-14 21:06:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:26,015 INFO L479 AbstractCegarLoop]: Abstraction has 24278 states and 28514 transitions. [2020-10-14 21:06:26,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:06:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24278 states and 28514 transitions. [2020-10-14 21:06:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-14 21:06:26,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:26,041 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:26,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 21:06:26,041 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:26,041 INFO L82 PathProgramCache]: Analyzing trace with hash 965004168, now seen corresponding path program 1 times [2020-10-14 21:06:26,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:26,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023594142] [2020-10-14 21:06:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:30,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-14 21:06:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 497 [2020-10-14 21:06:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:30,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:30,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:30,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:06:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:30,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:30,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:30,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:30,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:06:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 21:06:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:30,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:06:30,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 21:06:30,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:30,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:06:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:06:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:30,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 21:06:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:31,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 21:06:31,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 21:06:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:31,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 21:06:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:31,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-14 21:06:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:31,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:31,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 21:06:31,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:31,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:06:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 177 proven. 337 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 21:06:32,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023594142] [2020-10-14 21:06:32,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:32,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 21:06:32,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897240935] [2020-10-14 21:06:32,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:06:32,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:06:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:06:32,201 INFO L87 Difference]: Start difference. First operand 24278 states and 28514 transitions. Second operand 10 states. [2020-10-14 21:06:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:37,501 INFO L93 Difference]: Finished difference Result 47504 states and 56298 transitions. [2020-10-14 21:06:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 21:06:37,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 532 [2020-10-14 21:06:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:37,549 INFO L225 Difference]: With dead ends: 47504 [2020-10-14 21:06:37,549 INFO L226 Difference]: Without dead ends: 25546 [2020-10-14 21:06:37,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 21:06:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25546 states. [2020-10-14 21:06:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25546 to 24468. [2020-10-14 21:06:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24468 states. [2020-10-14 21:06:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24468 states to 24468 states and 28722 transitions. [2020-10-14 21:06:37,958 INFO L78 Accepts]: Start accepts. Automaton has 24468 states and 28722 transitions. Word has length 532 [2020-10-14 21:06:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:37,959 INFO L479 AbstractCegarLoop]: Abstraction has 24468 states and 28722 transitions. [2020-10-14 21:06:37,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:06:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 24468 states and 28722 transitions. [2020-10-14 21:06:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-14 21:06:37,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:37,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:37,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 21:06:37,986 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1928288925, now seen corresponding path program 1 times [2020-10-14 21:06:37,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:37,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081237489] [2020-10-14 21:06:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:41,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3689 [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 21:06:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 21:06:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:41,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:41,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:41,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:42,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:42,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:06:42,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 21:06:42,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:42,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:06:42,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 21:06:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:06:42,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 21:06:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:42,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 21:06:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:42,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-14 21:06:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:06:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 366 proven. 136 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 21:06:42,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081237489] [2020-10-14 21:06:42,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:42,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:06:42,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758677756] [2020-10-14 21:06:42,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:42,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:42,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:42,998 INFO L87 Difference]: Start difference. First operand 24468 states and 28722 transitions. Second operand 7 states. [2020-10-14 21:06:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:46,818 INFO L93 Difference]: Finished difference Result 50462 states and 59281 transitions. [2020-10-14 21:06:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:06:46,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 540 [2020-10-14 21:06:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:46,868 INFO L225 Difference]: With dead ends: 50462 [2020-10-14 21:06:46,868 INFO L226 Difference]: Without dead ends: 26188 [2020-10-14 21:06:46,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2020-10-14 21:06:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 25411. [2020-10-14 21:06:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25411 states. [2020-10-14 21:06:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25411 states to 25411 states and 29700 transitions. [2020-10-14 21:06:47,219 INFO L78 Accepts]: Start accepts. Automaton has 25411 states and 29700 transitions. Word has length 540 [2020-10-14 21:06:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:47,220 INFO L479 AbstractCegarLoop]: Abstraction has 25411 states and 29700 transitions. [2020-10-14 21:06:47,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:06:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 25411 states and 29700 transitions. [2020-10-14 21:06:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2020-10-14 21:06:47,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:47,247 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:47,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 21:06:47,247 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash -366694219, now seen corresponding path program 1 times [2020-10-14 21:06:47,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:47,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232180778] [2020-10-14 21:06:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-14 21:06:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 406 [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:06:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:48,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:48,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:49,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:06:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:49,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:06:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-14 21:06:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:49,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:06:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-10-14 21:06:49,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232180778] [2020-10-14 21:06:49,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:49,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:06:49,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963692521] [2020-10-14 21:06:49,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:06:49,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:49,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:06:49,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:06:49,659 INFO L87 Difference]: Start difference. First operand 25411 states and 29700 transitions. Second operand 8 states. [2020-10-14 21:06:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:53,700 INFO L93 Difference]: Finished difference Result 57872 states and 67927 transitions. [2020-10-14 21:06:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:06:53,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 576 [2020-10-14 21:06:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:53,770 INFO L225 Difference]: With dead ends: 57872 [2020-10-14 21:06:53,770 INFO L226 Difference]: Without dead ends: 33997 [2020-10-14 21:06:53,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:06:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33997 states. [2020-10-14 21:06:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33997 to 30187. [2020-10-14 21:06:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30187 states. [2020-10-14 21:06:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30187 states to 30187 states and 35234 transitions. [2020-10-14 21:06:54,200 INFO L78 Accepts]: Start accepts. Automaton has 30187 states and 35234 transitions. Word has length 576 [2020-10-14 21:06:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:54,201 INFO L479 AbstractCegarLoop]: Abstraction has 30187 states and 35234 transitions. [2020-10-14 21:06:54,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:06:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 30187 states and 35234 transitions. [2020-10-14 21:06:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-10-14 21:06:54,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:54,232 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:54,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 21:06:54,232 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1631120111, now seen corresponding path program 1 times [2020-10-14 21:06:54,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:54,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904134980] [2020-10-14 21:06:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-14 21:06:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 21:06:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:56,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:56,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:56,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:06:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:06:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 21:06:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:06:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:06:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 21:06:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:56,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:06:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:06:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-10-14 21:06:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:56,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:06:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:06:56,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:06:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 371 proven. 168 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2020-10-14 21:06:56,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904134980] [2020-10-14 21:06:56,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:56,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:06:56,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751924068] [2020-10-14 21:06:56,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:06:56,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:06:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:56,905 INFO L87 Difference]: Start difference. First operand 30187 states and 35234 transitions. Second operand 7 states. [2020-10-14 21:06:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:59,804 INFO L93 Difference]: Finished difference Result 61130 states and 71435 transitions. [2020-10-14 21:06:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:06:59,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 608 [2020-10-14 21:06:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:59,862 INFO L225 Difference]: With dead ends: 61130 [2020-10-14 21:06:59,862 INFO L226 Difference]: Without dead ends: 32671 [2020-10-14 21:06:59,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:06:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32671 states. [2020-10-14 21:07:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32671 to 32668. [2020-10-14 21:07:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32668 states. [2020-10-14 21:07:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32668 states to 32668 states and 37841 transitions. [2020-10-14 21:07:00,268 INFO L78 Accepts]: Start accepts. Automaton has 32668 states and 37841 transitions. Word has length 608 [2020-10-14 21:07:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:00,269 INFO L479 AbstractCegarLoop]: Abstraction has 32668 states and 37841 transitions. [2020-10-14 21:07:00,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 32668 states and 37841 transitions. [2020-10-14 21:07:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-14 21:07:00,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:00,301 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:00,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 21:07:00,302 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:00,302 INFO L82 PathProgramCache]: Analyzing trace with hash 50406738, now seen corresponding path program 1 times [2020-10-14 21:07:00,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:00,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499177096] [2020-10-14 21:07:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4268 [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 21:07:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 21:07:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:07:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:07:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 21:07:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 21:07:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:05,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:05,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:07:05,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:07:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2020-10-14 21:07:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:05,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:05,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:07:05,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-14 21:07:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:05,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:05,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:05,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 21:07:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:05,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:07:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 461 proven. 221 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2020-10-14 21:07:05,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499177096] [2020-10-14 21:07:05,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:05,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:05,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964865000] [2020-10-14 21:07:05,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:05,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:05,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:05,465 INFO L87 Difference]: Start difference. First operand 32668 states and 37841 transitions. Second operand 7 states. [2020-10-14 21:07:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:09,108 INFO L93 Difference]: Finished difference Result 65577 states and 75963 transitions. [2020-10-14 21:07:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:09,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2020-10-14 21:07:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:09,168 INFO L225 Difference]: With dead ends: 65577 [2020-10-14 21:07:09,168 INFO L226 Difference]: Without dead ends: 35607 [2020-10-14 21:07:09,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:07:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35607 states. [2020-10-14 21:07:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35607 to 35378. [2020-10-14 21:07:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35378 states. [2020-10-14 21:07:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35378 states to 35378 states and 40734 transitions. [2020-10-14 21:07:09,611 INFO L78 Accepts]: Start accepts. Automaton has 35378 states and 40734 transitions. Word has length 678 [2020-10-14 21:07:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:09,612 INFO L479 AbstractCegarLoop]: Abstraction has 35378 states and 40734 transitions. [2020-10-14 21:07:09,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 35378 states and 40734 transitions. [2020-10-14 21:07:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2020-10-14 21:07:09,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:09,649 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:09,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 21:07:09,650 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:09,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2092413347, now seen corresponding path program 1 times [2020-10-14 21:07:09,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:09,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752664529] [2020-10-14 21:07:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 721 [2020-10-14 21:07:14,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 367 [2020-10-14 21:07:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:14,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:14,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:07:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:15,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:07:15,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:07:15,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:15,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 21:07:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-14 21:07:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:07:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:07:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-14 21:07:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:15,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:15,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:07:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-10-14 21:07:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:15,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 21:07:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 980 proven. 140 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-14 21:07:16,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752664529] [2020-10-14 21:07:16,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:16,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:07:16,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095161673] [2020-10-14 21:07:16,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:07:16,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:16,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:07:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:07:16,184 INFO L87 Difference]: Start difference. First operand 35378 states and 40734 transitions. Second operand 10 states. [2020-10-14 21:07:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:22,515 INFO L93 Difference]: Finished difference Result 79515 states and 92281 transitions. [2020-10-14 21:07:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 21:07:22,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 703 [2020-10-14 21:07:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:22,608 INFO L225 Difference]: With dead ends: 79515 [2020-10-14 21:07:22,608 INFO L226 Difference]: Without dead ends: 47223 [2020-10-14 21:07:22,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 21:07:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47223 states. [2020-10-14 21:07:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47223 to 45745. [2020-10-14 21:07:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45745 states. [2020-10-14 21:07:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45745 states to 45745 states and 52368 transitions. [2020-10-14 21:07:23,227 INFO L78 Accepts]: Start accepts. Automaton has 45745 states and 52368 transitions. Word has length 703 [2020-10-14 21:07:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:23,228 INFO L479 AbstractCegarLoop]: Abstraction has 45745 states and 52368 transitions. [2020-10-14 21:07:23,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:07:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 45745 states and 52368 transitions. [2020-10-14 21:07:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-14 21:07:23,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:23,264 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:23,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 21:07:23,264 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash 612655187, now seen corresponding path program 1 times [2020-10-14 21:07:23,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:23,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118814357] [2020-10-14 21:07:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 381 [2020-10-14 21:07:28,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 21:07:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:28,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:07:28,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 21:07:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 21:07:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:07:28,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:07:28,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:28,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:07:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:28,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 21:07:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:29,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:29,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 21:07:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 21:07:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2020-10-14 21:07:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:29,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:29,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:07:29,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2020-10-14 21:07:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:29,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:07:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1973 backedges. 632 proven. 235 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2020-10-14 21:07:29,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118814357] [2020-10-14 21:07:29,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:29,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:29,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216616974] [2020-10-14 21:07:29,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:29,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:29,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:29,585 INFO L87 Difference]: Start difference. First operand 45745 states and 52368 transitions. Second operand 7 states. [2020-10-14 21:07:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:33,594 INFO L93 Difference]: Finished difference Result 90554 states and 103687 transitions. [2020-10-14 21:07:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:33,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 808 [2020-10-14 21:07:33,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:33,638 INFO L225 Difference]: With dead ends: 90554 [2020-10-14 21:07:33,638 INFO L226 Difference]: Without dead ends: 25542 [2020-10-14 21:07:33,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25542 states. [2020-10-14 21:07:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25542 to 19472. [2020-10-14 21:07:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19472 states. [2020-10-14 21:07:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 20876 transitions. [2020-10-14 21:07:33,910 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 20876 transitions. Word has length 808 [2020-10-14 21:07:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:33,911 INFO L479 AbstractCegarLoop]: Abstraction has 19472 states and 20876 transitions. [2020-10-14 21:07:33,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 20876 transitions. [2020-10-14 21:07:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-14 21:07:33,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:33,925 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:33,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 21:07:33,925 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:33,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1462773119, now seen corresponding path program 1 times [2020-10-14 21:07:33,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:33,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620226410] [2020-10-14 21:07:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 21:07:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 409 [2020-10-14 21:07:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:07:39,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:07:39,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:07:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:07:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 21:07:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 21:07:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 21:07:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:07:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-14 21:07:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:39,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:39,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:07:39,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:39,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 21:07:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-14 21:07:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 289 proven. 10 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2020-10-14 21:07:40,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620226410] [2020-10-14 21:07:40,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:40,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:07:40,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076605413] [2020-10-14 21:07:40,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:40,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:40,357 INFO L87 Difference]: Start difference. First operand 19472 states and 20876 transitions. Second operand 6 states. [2020-10-14 21:07:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:41,866 INFO L93 Difference]: Finished difference Result 37796 states and 40626 transitions. [2020-10-14 21:07:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:41,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 875 [2020-10-14 21:07:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:41,898 INFO L225 Difference]: With dead ends: 37796 [2020-10-14 21:07:41,899 INFO L226 Difference]: Without dead ends: 19092 [2020-10-14 21:07:41,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19092 states. [2020-10-14 21:07:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19092 to 18669. [2020-10-14 21:07:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18669 states. [2020-10-14 21:07:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 20011 transitions. [2020-10-14 21:07:42,106 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 20011 transitions. Word has length 875 [2020-10-14 21:07:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:42,106 INFO L479 AbstractCegarLoop]: Abstraction has 18669 states and 20011 transitions. [2020-10-14 21:07:42,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 20011 transitions. [2020-10-14 21:07:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-14 21:07:42,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:42,119 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:42,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 21:07:42,119 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1555933901, now seen corresponding path program 1 times [2020-10-14 21:07:42,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:42,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438196240] [2020-10-14 21:07:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 495 [2020-10-14 21:07:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 21:07:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:47,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:47,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:47,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 21:07:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:07:47,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 21:07:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:07:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2020-10-14 21:07:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:07:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-14 21:07:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:47,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:07:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 21:07:47,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:47,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 21:07:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-14 21:07:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:48,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 21:07:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:07:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 634 proven. 221 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-14 21:07:48,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438196240] [2020-10-14 21:07:48,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:48,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:48,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612577388] [2020-10-14 21:07:48,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:48,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:48,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:48,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:48,326 INFO L87 Difference]: Start difference. First operand 18669 states and 20011 transitions. Second operand 7 states. [2020-10-14 21:07:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:50,121 INFO L93 Difference]: Finished difference Result 24255 states and 25813 transitions. [2020-10-14 21:07:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 21:07:50,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 891 [2020-10-14 21:07:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:50,128 INFO L225 Difference]: With dead ends: 24255 [2020-10-14 21:07:50,128 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 21:07:50,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:07:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 21:07:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 21:07:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 21:07:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 21:07:50,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 891 [2020-10-14 21:07:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:50,145 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 21:07:50,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 21:07:50,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 21:07:50,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 21:07:50,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 21:07:54,327 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 880 DAG size of output: 502 [2020-10-14 21:07:55,557 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 880 DAG size of output: 502 [2020-10-14 21:07:55,779 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 33