/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:57:30,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:57:30,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:57:30,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:57:30,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:57:30,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:57:30,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:57:30,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:57:30,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:57:30,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:57:30,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:57:30,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:57:30,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:57:30,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:57:30,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:57:30,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:57:30,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:57:30,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:57:30,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:57:30,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:57:30,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:57:30,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:57:30,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:57:30,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:57:30,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:57:30,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:57:30,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:57:30,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:57:30,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:57:30,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:57:30,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:57:30,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:57:30,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:57:30,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:57:30,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:57:30,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:57:30,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:57:30,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:57:30,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:57:30,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:57:30,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:57:30,640 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 02:57:30,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:57:30,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:57:30,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:57:30,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:57:30,680 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:57:30,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:57:30,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:57:30,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:57:30,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:57:30,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:57:30,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:57:30,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:57:30,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:57:30,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:57:30,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:57:30,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:57:30,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:57:30,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:57:30,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:57:30,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:57:30,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:57:30,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:57:30,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:57:30,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:57:30,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:57:30,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:57:30,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:57:30,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:57:30,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:57:30,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:57:31,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:57:31,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:57:31,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:57:31,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:57:31,048 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:57:31,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-14 02:57:31,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9a6d6d6/69a8629acdcd48f5b00bcd4d378d0ba0/FLAG652bef333 [2020-10-14 02:57:31,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:57:31,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-14 02:57:31,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9a6d6d6/69a8629acdcd48f5b00bcd4d378d0ba0/FLAG652bef333 [2020-10-14 02:57:32,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af9a6d6d6/69a8629acdcd48f5b00bcd4d378d0ba0 [2020-10-14 02:57:32,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:57:32,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:57:32,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:57:32,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:57:32,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:57:32,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:57:32" (1/1) ... [2020-10-14 02:57:32,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccce517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:32, skipping insertion in model container [2020-10-14 02:57:32,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:57:32" (1/1) ... [2020-10-14 02:57:32,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:57:32,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:57:34,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:57:34,393 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:57:35,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:57:35,197 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:57:35,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35 WrapperNode [2020-10-14 02:57:35,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:57:35,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:57:35,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:57:35,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:57:35,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (1/1) ... [2020-10-14 02:57:35,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:57:35,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:57:35,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:57:35,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:57:35,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (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 02:57:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:57:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:57:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:57:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:57:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:57:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:57:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:57:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:57:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:57:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:57:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:57:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:57:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:57:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:57:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:57:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:57:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:57:47,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:57:47,171 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:57:47,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:57:47 BoogieIcfgContainer [2020-10-14 02:57:47,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:57:47,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:57:47,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:57:47,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:57:47,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:57:32" (1/3) ... [2020-10-14 02:57:47,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260102da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:57:47, skipping insertion in model container [2020-10-14 02:57:47,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:57:35" (2/3) ... [2020-10-14 02:57:47,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260102da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:57:47, skipping insertion in model container [2020-10-14 02:57:47,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:57:47" (3/3) ... [2020-10-14 02:57:47,196 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label04.c [2020-10-14 02:57:47,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:57:47,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:57:47,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:57:47,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:57:47,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:57:47,261 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:57:47,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:57:47,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:57:47,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:57:47,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:57:47,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:57:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 02:57:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 02:57:47,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:47,312 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] [2020-10-14 02:57:47,313 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1356842343, now seen corresponding path program 1 times [2020-10-14 02:57:47,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:47,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780105595] [2020-10-14 02:57:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 02:57:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 02:57:47,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:47,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:47,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:57:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:57:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 02:57:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 02:57:48,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:48,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:57:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:57:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:48,037 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 02:57:48,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780105595] [2020-10-14 02:57:48,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:57:48,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:57:48,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124764381] [2020-10-14 02:57:48,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:57:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:57:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:57:48,066 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 02:58:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:03,461 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2020-10-14 02:58:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:03,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 02:58:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:03,499 INFO L225 Difference]: With dead ends: 3165 [2020-10-14 02:58:03,500 INFO L226 Difference]: Without dead ends: 1961 [2020-10-14 02:58:03,510 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 02:58:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-10-14 02:58:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2020-10-14 02:58:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-14 02:58:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2020-10-14 02:58:03,666 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 22 [2020-10-14 02:58:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:03,666 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2020-10-14 02:58:03,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:58:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2020-10-14 02:58:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 02:58:03,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:03,674 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:58:03,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:58:03,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:03,676 INFO L82 PathProgramCache]: Analyzing trace with hash -242610609, now seen corresponding path program 1 times [2020-10-14 02:58:03,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:03,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868533227] [2020-10-14 02:58:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:04,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:04,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 02:58:04,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:58:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-14 02:58:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:04,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 02:58:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 02:58:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:58:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:05,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:05,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:05,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:58:05,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:05,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:58:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:05,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 02:58:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 02:58:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 02:58:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:05,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868533227] [2020-10-14 02:58:05,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:05,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:58:05,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710906228] [2020-10-14 02:58:05,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:58:05,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:58:05,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:58:05,344 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand 5 states. [2020-10-14 02:58:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:21,990 INFO L93 Difference]: Finished difference Result 5561 states and 9745 transitions. [2020-10-14 02:58:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:21,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 02:58:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:22,028 INFO L225 Difference]: With dead ends: 5561 [2020-10-14 02:58:22,028 INFO L226 Difference]: Without dead ends: 3624 [2020-10-14 02:58:22,036 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 02:58:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-10-14 02:58:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3590. [2020-10-14 02:58:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2020-10-14 02:58:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5371 transitions. [2020-10-14 02:58:22,261 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5371 transitions. Word has length 91 [2020-10-14 02:58:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:22,262 INFO L479 AbstractCegarLoop]: Abstraction has 3590 states and 5371 transitions. [2020-10-14 02:58:22,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:58:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5371 transitions. [2020-10-14 02:58:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 02:58:22,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:22,266 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:58:22,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:58:22,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:22,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:22,267 INFO L82 PathProgramCache]: Analyzing trace with hash 51428615, now seen corresponding path program 1 times [2020-10-14 02:58:22,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:22,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339674270] [2020-10-14 02:58:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:23,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:23,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 02:58:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:58:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-14 02:58:23,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:23,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:58:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 02:58:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:58:23,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:23,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:58:23,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:58:23,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:23,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:58:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:23,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339674270] [2020-10-14 02:58:23,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:23,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:58:23,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65346084] [2020-10-14 02:58:23,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:58:23,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:58:23,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:58:23,361 INFO L87 Difference]: Start difference. First operand 3590 states and 5371 transitions. Second operand 5 states. [2020-10-14 02:58:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:38,445 INFO L93 Difference]: Finished difference Result 8845 states and 13828 transitions. [2020-10-14 02:58:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:38,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-14 02:58:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:38,482 INFO L225 Difference]: With dead ends: 8845 [2020-10-14 02:58:38,482 INFO L226 Difference]: Without dead ends: 5261 [2020-10-14 02:58:38,493 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 02:58:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2020-10-14 02:58:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5242. [2020-10-14 02:58:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5242 states. [2020-10-14 02:58:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 7401 transitions. [2020-10-14 02:58:38,640 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 7401 transitions. Word has length 95 [2020-10-14 02:58:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:38,641 INFO L479 AbstractCegarLoop]: Abstraction has 5242 states and 7401 transitions. [2020-10-14 02:58:38,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:58:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 7401 transitions. [2020-10-14 02:58:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 02:58:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:38,643 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:58:38,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:58:38,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:38,644 INFO L82 PathProgramCache]: Analyzing trace with hash -828159701, now seen corresponding path program 1 times [2020-10-14 02:58:38,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:38,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386858616] [2020-10-14 02:58:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:39,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:58:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:58:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 02:58:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:39,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 02:58:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 02:58:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:39,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:39,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:39,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:58:39,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:39,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:39,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:40,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:40,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 02:58:40,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:58:40,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:40,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:58:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:40,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386858616] [2020-10-14 02:58:40,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:40,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:58:40,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35844775] [2020-10-14 02:58:40,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:58:40,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:40,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:58:40,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:58:40,192 INFO L87 Difference]: Start difference. First operand 5242 states and 7401 transitions. Second operand 5 states. [2020-10-14 02:59:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:00,107 INFO L93 Difference]: Finished difference Result 12124 states and 17890 transitions. [2020-10-14 02:59:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:00,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 02:59:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:00,142 INFO L225 Difference]: With dead ends: 12124 [2020-10-14 02:59:00,142 INFO L226 Difference]: Without dead ends: 6888 [2020-10-14 02:59:00,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 02:59:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2020-10-14 02:59:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6880. [2020-10-14 02:59:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6880 states. [2020-10-14 02:59:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6880 states to 6880 states and 9451 transitions. [2020-10-14 02:59:00,327 INFO L78 Accepts]: Start accepts. Automaton has 6880 states and 9451 transitions. Word has length 98 [2020-10-14 02:59:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:00,329 INFO L479 AbstractCegarLoop]: Abstraction has 6880 states and 9451 transitions. [2020-10-14 02:59:00,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:59:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states and 9451 transitions. [2020-10-14 02:59:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 02:59:00,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:00,342 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 02:59:00,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:59:00,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:00,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1019163914, now seen corresponding path program 1 times [2020-10-14 02:59:00,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:00,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543367581] [2020-10-14 02:59:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:00,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:00,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:00,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:59:00,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:59:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-14 02:59:00,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:00,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:59:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:59:00,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:59:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:01,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:59:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:59:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:59:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 02:59:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:01,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:59:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:59:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:59:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543367581] [2020-10-14 02:59:01,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:59:01,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:59:01,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854708584] [2020-10-14 02:59:01,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:59:01,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:59:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:59:01,263 INFO L87 Difference]: Start difference. First operand 6880 states and 9451 transitions. Second operand 6 states. [2020-10-14 02:59:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:18,317 INFO L93 Difference]: Finished difference Result 13747 states and 18940 transitions. [2020-10-14 02:59:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:18,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-14 02:59:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:18,362 INFO L225 Difference]: With dead ends: 13747 [2020-10-14 02:59:18,363 INFO L226 Difference]: Without dead ends: 6873 [2020-10-14 02:59:18,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 02:59:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2020-10-14 02:59:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 6869. [2020-10-14 02:59:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6869 states. [2020-10-14 02:59:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6869 states to 6869 states and 9428 transitions. [2020-10-14 02:59:18,625 INFO L78 Accepts]: Start accepts. Automaton has 6869 states and 9428 transitions. Word has length 112 [2020-10-14 02:59:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:18,626 INFO L479 AbstractCegarLoop]: Abstraction has 6869 states and 9428 transitions. [2020-10-14 02:59:18,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:59:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states and 9428 transitions. [2020-10-14 02:59:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 02:59:18,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:18,632 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-14 02:59:18,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:59:18,633 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:18,633 INFO L82 PathProgramCache]: Analyzing trace with hash -420211169, now seen corresponding path program 1 times [2020-10-14 02:59:18,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:18,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118627144] [2020-10-14 02:59:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:19,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 02:59:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:59:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-10-14 02:59:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 02:59:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 02:59:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:19,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:59:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 02:59:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 02:59:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:20,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 02:59:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:59:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:59:20,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118627144] [2020-10-14 02:59:20,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:20,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:59:20,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709841967] [2020-10-14 02:59:20,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:59:20,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:20,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:59:20,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:59:20,176 INFO L87 Difference]: Start difference. First operand 6869 states and 9428 transitions. Second operand 5 states. [2020-10-14 02:59:41,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:41,144 INFO L93 Difference]: Finished difference Result 15378 states and 22014 transitions. [2020-10-14 02:59:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:41,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 02:59:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:41,182 INFO L225 Difference]: With dead ends: 15378 [2020-10-14 02:59:41,182 INFO L226 Difference]: Without dead ends: 8515 [2020-10-14 02:59:41,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 02:59:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8515 states. [2020-10-14 02:59:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8515 to 8497. [2020-10-14 02:59:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8497 states. [2020-10-14 02:59:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 11720 transitions. [2020-10-14 02:59:41,417 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 11720 transitions. Word has length 131 [2020-10-14 02:59:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:41,418 INFO L479 AbstractCegarLoop]: Abstraction has 8497 states and 11720 transitions. [2020-10-14 02:59:41,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:59:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 11720 transitions. [2020-10-14 02:59:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 02:59:41,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:41,421 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:59:41,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:59:41,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1994209543, now seen corresponding path program 1 times [2020-10-14 02:59:41,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:41,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224970172] [2020-10-14 02:59:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 02:59:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:59:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-14 02:59:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:43,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 02:59:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 02:59:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:43,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:43,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:43,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:59:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:43,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:59:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 02:59:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:43,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:59:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:59:43,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224970172] [2020-10-14 02:59:43,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:43,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:59:43,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10884862] [2020-10-14 02:59:43,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:59:43,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:59:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:59:43,704 INFO L87 Difference]: Start difference. First operand 8497 states and 11720 transitions. Second operand 6 states. [2020-10-14 03:00:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:07,274 INFO L93 Difference]: Finished difference Result 25132 states and 35700 transitions. [2020-10-14 03:00:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:00:07,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-14 03:00:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:07,341 INFO L225 Difference]: With dead ends: 25132 [2020-10-14 03:00:07,342 INFO L226 Difference]: Without dead ends: 16641 [2020-10-14 03:00:07,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:00:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16641 states. [2020-10-14 03:00:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16641 to 16636. [2020-10-14 03:00:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16636 states. [2020-10-14 03:00:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16636 states to 16636 states and 22505 transitions. [2020-10-14 03:00:07,764 INFO L78 Accepts]: Start accepts. Automaton has 16636 states and 22505 transitions. Word has length 142 [2020-10-14 03:00:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:07,764 INFO L479 AbstractCegarLoop]: Abstraction has 16636 states and 22505 transitions. [2020-10-14 03:00:07,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:00:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16636 states and 22505 transitions. [2020-10-14 03:00:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 03:00:07,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:00:07,770 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 03:00:07,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:00:07,770 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:00:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:00:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash -102186805, now seen corresponding path program 1 times [2020-10-14 03:00:07,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:00:07,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118261415] [2020-10-14 03:00:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:00:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 03:00:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:00:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3087 [2020-10-14 03:00:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:00:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:00:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:10,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:00:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:10,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:10,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:00:10,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:00:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:10,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:11,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:00:11,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:00:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:11,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:11,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:00:11,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:00:11,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:11,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:00:11,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:00:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:11,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:00:11,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:00:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:11,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:00:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:00:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:00:11,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118261415] [2020-10-14 03:00:11,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:00:11,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:00:11,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106899776] [2020-10-14 03:00:11,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:00:11,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:00:11,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:00:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:00:11,434 INFO L87 Difference]: Start difference. First operand 16636 states and 22505 transitions. Second operand 7 states. [2020-10-14 03:00:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:39,169 INFO L93 Difference]: Finished difference Result 49961 states and 71112 transitions. [2020-10-14 03:00:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:00:39,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-14 03:00:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:39,306 INFO L225 Difference]: With dead ends: 49961 [2020-10-14 03:00:39,306 INFO L226 Difference]: Without dead ends: 33331 [2020-10-14 03:00:39,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:00:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33331 states. [2020-10-14 03:00:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33331 to 33287. [2020-10-14 03:00:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33287 states. [2020-10-14 03:00:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33287 states to 33287 states and 44328 transitions. [2020-10-14 03:00:41,186 INFO L78 Accepts]: Start accepts. Automaton has 33287 states and 44328 transitions. Word has length 190 [2020-10-14 03:00:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:41,187 INFO L479 AbstractCegarLoop]: Abstraction has 33287 states and 44328 transitions. [2020-10-14 03:00:41,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:00:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33287 states and 44328 transitions. [2020-10-14 03:00:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 03:00:41,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:00:41,193 INFO L422 BasicCegarLoop]: trace histogram [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, 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 03:00:41,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:00:41,194 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:00:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:00:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1337942572, now seen corresponding path program 1 times [2020-10-14 03:00:41,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:00:41,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324341736] [2020-10-14 03:00:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:00:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:45,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 03:00:45,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:00:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3952 [2020-10-14 03:00:45,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:45,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:00:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:00:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:00:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:45,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:00:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:00:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:00:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:45,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:00:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:00:45,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:45,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:00:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 03:00:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:45,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:45,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:00:45,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 03:00:45,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:45,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:00:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:00:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:00:45,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324341736] [2020-10-14 03:00:45,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:00:45,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:00:45,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132375076] [2020-10-14 03:00:45,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:00:45,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:00:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:00:45,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:00:45,869 INFO L87 Difference]: Start difference. First operand 33287 states and 44328 transitions. Second operand 7 states. [2020-10-14 03:01:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:01:22,027 INFO L93 Difference]: Finished difference Result 96530 states and 135293 transitions. [2020-10-14 03:01:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:01:22,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 03:01:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:01:22,323 INFO L225 Difference]: With dead ends: 96530 [2020-10-14 03:01:22,324 INFO L226 Difference]: Without dead ends: 63249 [2020-10-14 03:01:22,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:01:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63249 states. [2020-10-14 03:01:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63249 to 63163. [2020-10-14 03:01:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63163 states. [2020-10-14 03:01:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63163 states to 63163 states and 86699 transitions. [2020-10-14 03:01:23,709 INFO L78 Accepts]: Start accepts. Automaton has 63163 states and 86699 transitions. Word has length 222 [2020-10-14 03:01:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:01:23,709 INFO L479 AbstractCegarLoop]: Abstraction has 63163 states and 86699 transitions. [2020-10-14 03:01:23,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:01:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 63163 states and 86699 transitions. [2020-10-14 03:01:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 03:01:23,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:01:23,717 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:23,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:01:23,718 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:01:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:01:23,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1159995766, now seen corresponding path program 1 times [2020-10-14 03:01:23,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:01:23,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86820077] [2020-10-14 03:01:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:01:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:01:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:01:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...