/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=BIGGEST --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/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:21:43,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:21:43,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:21:43,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:21:43,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:21:43,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:21:43,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:21:43,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:21:43,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:21:43,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:21:43,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:21:43,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:21:43,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:21:43,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:21:43,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:21:43,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:21:43,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:21:43,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:21:43,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:21:43,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:21:43,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:21:43,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:21:43,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:21:43,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:21:43,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:21:43,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:21:43,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:21:43,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:21:43,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:21:43,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:21:43,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:21:43,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:21:43,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:21:43,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:21:43,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:21:43,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:21:43,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:21:43,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:21:43,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:21:43,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:21:43,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:21:43,198 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 [2020-10-12 13:21:43,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:21:43,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:21:43,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:21:43,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:21:43,250 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:21:43,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:21:43,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:21:43,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:21:43,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:21:43,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:21:43,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:21:43,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:21:43,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:21:43,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:21:43,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:21:43,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:21:43,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:21:43,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:21:43,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:21:43,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:21:43,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:21:43,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:21:43,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:21:43,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:21:43,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:21:43,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:21:43,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:21:43,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:21:43,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:21:43,257 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:21:43,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:21:43,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:21:43,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:21:43,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:21:43,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:21:43,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-12 13:21:43,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbdbbcb2/447fdf1e447b41e1b3b64afd3add5c04/FLAG3e30a46d7 [2020-10-12 13:21:44,531 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:21:44,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-12 13:21:44,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbdbbcb2/447fdf1e447b41e1b3b64afd3add5c04/FLAG3e30a46d7 [2020-10-12 13:21:44,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbdbbcb2/447fdf1e447b41e1b3b64afd3add5c04 [2020-10-12 13:21:44,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:21:44,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:21:44,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:44,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:21:44,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:21:44,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:44" (1/1) ... [2020-10-12 13:21:44,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:44, skipping insertion in model container [2020-10-12 13:21:44,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:21:44" (1/1) ... [2020-10-12 13:21:44,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:21:44,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:21:46,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:46,470 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:21:47,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:21:47,230 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:21:47,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47 WrapperNode [2020-10-12 13:21:47,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:21:47,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:21:47,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:21:47,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:21:47,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (1/1) ... [2020-10-12 13:21:47,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:21:47,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:21:47,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:21:47,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:21:47,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (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 [2020-10-12 13:21:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:21:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:21:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:21:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:21:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:21:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:21:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:21:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:21:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:21:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:21:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:21:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:21:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:21:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:21:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:21:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:21:47,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:21:52,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:21:52,941 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:21:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:52 BoogieIcfgContainer [2020-10-12 13:21:52,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:21:52,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:21:52,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:21:52,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:21:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:21:44" (1/3) ... [2020-10-12 13:21:52,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704e2cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:52, skipping insertion in model container [2020-10-12 13:21:52,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:21:47" (2/3) ... [2020-10-12 13:21:52,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704e2cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:21:52, skipping insertion in model container [2020-10-12 13:21:52,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:21:52" (3/3) ... [2020-10-12 13:21:52,963 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-12 13:21:52,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:21:52,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:21:53,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:21:53,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:21:53,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:21:53,034 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:21:53,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:21:53,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:21:53,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:21:53,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:21:53,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:21:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:21:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 13:21:53,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:53,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:53,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:53,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:53,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1489686398, now seen corresponding path program 1 times [2020-10-12 13:21:53,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:53,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318762645] [2020-10-12 13:21:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 13:21:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-12 13:21:53,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:21:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:21:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:21:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:21:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:54,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:21:54,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:21:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:21:54,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318762645] [2020-10-12 13:21:54,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:21:54,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:21:54,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984900864] [2020-10-12 13:21:54,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:21:54,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:54,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:21:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:54,157 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-12 13:22:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:03,056 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:22:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:22:03,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 13:22:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:03,094 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:22:03,094 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:22:03,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:22:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:22:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:22:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:22:03,281 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 59 [2020-10-12 13:22:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:03,282 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:22:03,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:22:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:22:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 13:22:03,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:03,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:22:03,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:22:03,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash -612385541, now seen corresponding path program 1 times [2020-10-12 13:22:03,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:03,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443280618] [2020-10-12 13:22:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:03,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:04,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:04,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:22:04,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:04,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-10-12 13:22:04,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:04,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:22:04,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:22:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:04,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 13:22:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:22:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:05,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:05,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:22:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:22:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:22:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:22:05,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443280618] [2020-10-12 13:22:05,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:05,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:22:05,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429085223] [2020-10-12 13:22:05,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:22:05,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:05,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:22:05,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:05,122 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:22:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:16,571 INFO L93 Difference]: Finished difference Result 4720 states and 7736 transitions. [2020-10-12 13:22:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:22:16,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-12 13:22:16,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:16,603 INFO L225 Difference]: With dead ends: 4720 [2020-10-12 13:22:16,604 INFO L226 Difference]: Without dead ends: 3173 [2020-10-12 13:22:16,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:22:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-12 13:22:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3138. [2020-10-12 13:22:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-10-12 13:22:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4478 transitions. [2020-10-12 13:22:16,739 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4478 transitions. Word has length 134 [2020-10-12 13:22:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:16,743 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4478 transitions. [2020-10-12 13:22:16,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:22:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4478 transitions. [2020-10-12 13:22:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 13:22:16,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:16,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:16,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:22:16,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:16,764 INFO L82 PathProgramCache]: Analyzing trace with hash 532689859, now seen corresponding path program 1 times [2020-10-12 13:22:16,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:16,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135148229] [2020-10-12 13:22:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:17,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:22:17,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:22:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-12 13:22:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:22:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:22:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:22:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:18,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:22:18,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:18,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:22:18,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 13:22:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:18,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:22:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:22:18,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135148229] [2020-10-12 13:22:18,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:22:18,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:22:18,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544149993] [2020-10-12 13:22:18,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:22:18,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:22:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:22:18,466 INFO L87 Difference]: Start difference. First operand 3138 states and 4478 transitions. Second operand 6 states. [2020-10-12 13:22:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:29,368 INFO L93 Difference]: Finished difference Result 9518 states and 13870 transitions. [2020-10-12 13:22:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:22:29,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-12 13:22:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:29,411 INFO L225 Difference]: With dead ends: 9518 [2020-10-12 13:22:29,411 INFO L226 Difference]: Without dead ends: 6386 [2020-10-12 13:22:29,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:22:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2020-10-12 13:22:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 6353. [2020-10-12 13:22:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6353 states. [2020-10-12 13:22:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 8225 transitions. [2020-10-12 13:22:29,737 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 8225 transitions. Word has length 138 [2020-10-12 13:22:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:29,738 INFO L479 AbstractCegarLoop]: Abstraction has 6353 states and 8225 transitions. [2020-10-12 13:22:29,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:22:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 8225 transitions. [2020-10-12 13:22:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 13:22:29,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:29,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:22:29,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:22:29,742 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -714913297, now seen corresponding path program 1 times [2020-10-12 13:22:29,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:29,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131516972] [2020-10-12 13:22:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:30,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:30,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:22:30,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-12 13:22:30,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:30,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:22:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:22:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:30,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:30,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:22:30,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:30,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:30,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:30,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:22:30,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 13:22:30,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:30,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:22:30,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:22:30,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131516972] [2020-10-12 13:22:30,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:22:30,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:22:30,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928505330] [2020-10-12 13:22:30,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:30,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:30,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:30,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:30,807 INFO L87 Difference]: Start difference. First operand 6353 states and 8225 transitions. Second operand 7 states. [2020-10-12 13:22:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:44,283 INFO L93 Difference]: Finished difference Result 19405 states and 25549 transitions. [2020-10-12 13:22:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:22:44,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-12 13:22:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:44,338 INFO L225 Difference]: With dead ends: 19405 [2020-10-12 13:22:44,339 INFO L226 Difference]: Without dead ends: 13058 [2020-10-12 13:22:44,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:22:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2020-10-12 13:22:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 11335. [2020-10-12 13:22:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11335 states. [2020-10-12 13:22:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11335 states to 11335 states and 14288 transitions. [2020-10-12 13:22:44,643 INFO L78 Accepts]: Start accepts. Automaton has 11335 states and 14288 transitions. Word has length 144 [2020-10-12 13:22:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:44,643 INFO L479 AbstractCegarLoop]: Abstraction has 11335 states and 14288 transitions. [2020-10-12 13:22:44,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 11335 states and 14288 transitions. [2020-10-12 13:22:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-12 13:22:44,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:44,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:22:44,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:22:44,648 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash 524954598, now seen corresponding path program 1 times [2020-10-12 13:22:44,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:44,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565169670] [2020-10-12 13:22:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:44,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:46,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 13:22:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:22:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-12 13:22:46,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:22:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:22:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:22:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:46,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:22:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:46,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:22:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:22:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:22:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:22:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:22:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:22:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:22:46,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:22:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:22:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 13:22:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:22:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:22:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:22:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:22:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:22:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:22:47,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565169670] [2020-10-12 13:22:47,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:22:47,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:22:47,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669089409] [2020-10-12 13:22:47,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:22:47,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:22:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:22:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:22:47,312 INFO L87 Difference]: Start difference. First operand 11335 states and 14288 transitions. Second operand 7 states. [2020-10-12 13:22:59,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:59,779 INFO L93 Difference]: Finished difference Result 27725 states and 34766 transitions. [2020-10-12 13:22:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:22:59,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-12 13:22:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:59,844 INFO L225 Difference]: With dead ends: 27725 [2020-10-12 13:22:59,845 INFO L226 Difference]: Without dead ends: 16396 [2020-10-12 13:22:59,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:22:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16396 states. [2020-10-12 13:23:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16396 to 15408. [2020-10-12 13:23:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15408 states. [2020-10-12 13:23:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15408 states to 15408 states and 18786 transitions. [2020-10-12 13:23:00,267 INFO L78 Accepts]: Start accepts. Automaton has 15408 states and 18786 transitions. Word has length 207 [2020-10-12 13:23:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:00,268 INFO L479 AbstractCegarLoop]: Abstraction has 15408 states and 18786 transitions. [2020-10-12 13:23:00,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15408 states and 18786 transitions. [2020-10-12 13:23:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-12 13:23:00,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:00,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:00,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:23:00,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1382339402, now seen corresponding path program 1 times [2020-10-12 13:23:00,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:00,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002474543] [2020-10-12 13:23:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-12 13:23:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:23:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-10-12 13:23:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:01,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:23:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:23:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:01,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:01,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:01,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:23:01,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:01,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:01,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:02,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:02,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:23:02,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:23:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:23:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:23:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:02,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:02,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:23:02,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:02,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:23:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 122 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:02,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002474543] [2020-10-12 13:23:02,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:02,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:23:02,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726856792] [2020-10-12 13:23:02,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:23:02,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:23:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:02,522 INFO L87 Difference]: Start difference. First operand 15408 states and 18786 transitions. Second operand 6 states. [2020-10-12 13:23:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:15,458 INFO L93 Difference]: Finished difference Result 36748 states and 46711 transitions. [2020-10-12 13:23:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:23:15,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 279 [2020-10-12 13:23:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:15,532 INFO L225 Difference]: With dead ends: 36748 [2020-10-12 13:23:15,532 INFO L226 Difference]: Without dead ends: 21346 [2020-10-12 13:23:15,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:23:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21346 states. [2020-10-12 13:23:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21346 to 21209. [2020-10-12 13:23:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21209 states. [2020-10-12 13:23:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21209 states to 21209 states and 26713 transitions. [2020-10-12 13:23:16,010 INFO L78 Accepts]: Start accepts. Automaton has 21209 states and 26713 transitions. Word has length 279 [2020-10-12 13:23:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:16,011 INFO L479 AbstractCegarLoop]: Abstraction has 21209 states and 26713 transitions. [2020-10-12 13:23:16,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:23:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 21209 states and 26713 transitions. [2020-10-12 13:23:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-12 13:23:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:16,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:16,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:23:16,018 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash 669640554, now seen corresponding path program 1 times [2020-10-12 13:23:16,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:16,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403684213] [2020-10-12 13:23:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-12 13:23:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-12 13:23:17,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:23:17,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:23:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:23:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:17,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:23:17,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:17,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:17,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:23:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:23:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:17,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:23:17,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:23:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:23:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 13:23:18,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:23:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 184 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:18,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403684213] [2020-10-12 13:23:18,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:18,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:23:18,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119684418] [2020-10-12 13:23:18,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:23:18,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:23:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:23:18,422 INFO L87 Difference]: Start difference. First operand 21209 states and 26713 transitions. Second operand 6 states. [2020-10-12 13:23:18,923 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 13:23:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:31,844 INFO L93 Difference]: Finished difference Result 60937 states and 80970 transitions. [2020-10-12 13:23:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:23:31,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2020-10-12 13:23:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:31,991 INFO L225 Difference]: With dead ends: 60937 [2020-10-12 13:23:31,992 INFO L226 Difference]: Without dead ends: 38944 [2020-10-12 13:23:32,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38944 states. [2020-10-12 13:23:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38944 to 38744. [2020-10-12 13:23:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38744 states. [2020-10-12 13:23:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38744 states to 38744 states and 49427 transitions. [2020-10-12 13:23:32,831 INFO L78 Accepts]: Start accepts. Automaton has 38744 states and 49427 transitions. Word has length 297 [2020-10-12 13:23:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:32,832 INFO L479 AbstractCegarLoop]: Abstraction has 38744 states and 49427 transitions. [2020-10-12 13:23:32,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:23:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 38744 states and 49427 transitions. [2020-10-12 13:23:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-12 13:23:32,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:32,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:32,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:23:32,839 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash 79044223, now seen corresponding path program 1 times [2020-10-12 13:23:32,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:32,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23228720] [2020-10-12 13:23:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 13:23:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:23:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-10-12 13:23:35,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:23:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:23:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:23:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:23:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 13:23:35,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:23:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:23:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:35,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:35,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:23:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:23:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:23:35,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:23:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:23:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 137 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:23:35,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23228720] [2020-10-12 13:23:35,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:35,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:23:35,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370903316] [2020-10-12 13:23:35,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:23:35,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:23:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:23:35,748 INFO L87 Difference]: Start difference. First operand 38744 states and 49427 transitions. Second operand 7 states. [2020-10-12 13:23:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:23:55,004 INFO L93 Difference]: Finished difference Result 88504 states and 116925 transitions. [2020-10-12 13:23:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:23:55,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-12 13:23:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:23:55,168 INFO L225 Difference]: With dead ends: 88504 [2020-10-12 13:23:55,168 INFO L226 Difference]: Without dead ends: 50533 [2020-10-12 13:23:55,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:23:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50533 states. [2020-10-12 13:23:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50533 to 49550. [2020-10-12 13:23:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49550 states. [2020-10-12 13:23:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49550 states to 49550 states and 63336 transitions. [2020-10-12 13:23:56,093 INFO L78 Accepts]: Start accepts. Automaton has 49550 states and 63336 transitions. Word has length 298 [2020-10-12 13:23:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:23:56,094 INFO L479 AbstractCegarLoop]: Abstraction has 49550 states and 63336 transitions. [2020-10-12 13:23:56,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:23:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 49550 states and 63336 transitions. [2020-10-12 13:23:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-12 13:23:56,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:23:56,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:23:56,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:23:56,101 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:23:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:23:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1134620246, now seen corresponding path program 1 times [2020-10-12 13:23:56,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:23:56,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485085720] [2020-10-12 13:23:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:23:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:56,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 13:23:56,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-12 13:23:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:23:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:23:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 13:23:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:23:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:23:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:23:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:23:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:23:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:23:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:23:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:23:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:23:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:23:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:23:57,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:23:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:23:57,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:23:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:23:57,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:23:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:23:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:23:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:23:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:23:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:23:57,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485085720] [2020-10-12 13:23:57,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:23:57,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:23:57,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672875231] [2020-10-12 13:23:57,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:23:57,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:23:57,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:23:57,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:23:57,527 INFO L87 Difference]: Start difference. First operand 49550 states and 63336 transitions. Second operand 5 states. [2020-10-12 13:24:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:17,999 INFO L93 Difference]: Finished difference Result 121047 states and 158939 transitions. [2020-10-12 13:24:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:24:18,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-12 13:24:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:18,204 INFO L225 Difference]: With dead ends: 121047 [2020-10-12 13:24:18,205 INFO L226 Difference]: Without dead ends: 72270 [2020-10-12 13:24:18,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:24:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72270 states. [2020-10-12 13:24:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72270 to 72221. [2020-10-12 13:24:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72221 states. [2020-10-12 13:24:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72221 states to 72221 states and 93699 transitions. [2020-10-12 13:24:21,697 INFO L78 Accepts]: Start accepts. Automaton has 72221 states and 93699 transitions. Word has length 329 [2020-10-12 13:24:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:21,698 INFO L479 AbstractCegarLoop]: Abstraction has 72221 states and 93699 transitions. [2020-10-12 13:24:21,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:24:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 72221 states and 93699 transitions. [2020-10-12 13:24:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-12 13:24:21,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:21,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:21,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:24:21,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1657665797, now seen corresponding path program 1 times [2020-10-12 13:24:21,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:21,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195288383] [2020-10-12 13:24:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:22,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-12 13:24:22,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-12 13:24:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-12 13:24:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 13:24:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:22,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:22,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:24:22,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:24:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:24:22,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:24:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:24:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 13:24:23,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:24:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-12 13:24:23,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195288383] [2020-10-12 13:24:23,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:23,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:24:23,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612970789] [2020-10-12 13:24:23,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:24:23,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:23,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:24:23,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:24:23,188 INFO L87 Difference]: Start difference. First operand 72221 states and 93699 transitions. Second operand 5 states. [2020-10-12 13:24:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:24:44,844 INFO L93 Difference]: Finished difference Result 171659 states and 230879 transitions. [2020-10-12 13:24:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:24:44,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2020-10-12 13:24:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:24:45,123 INFO L225 Difference]: With dead ends: 171659 [2020-10-12 13:24:45,123 INFO L226 Difference]: Without dead ends: 100211 [2020-10-12 13:24:45,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:24:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100211 states. [2020-10-12 13:24:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100211 to 97081. [2020-10-12 13:24:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97081 states. [2020-10-12 13:24:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97081 states to 97081 states and 125350 transitions. [2020-10-12 13:24:47,287 INFO L78 Accepts]: Start accepts. Automaton has 97081 states and 125350 transitions. Word has length 344 [2020-10-12 13:24:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:24:47,288 INFO L479 AbstractCegarLoop]: Abstraction has 97081 states and 125350 transitions. [2020-10-12 13:24:47,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:24:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 97081 states and 125350 transitions. [2020-10-12 13:24:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-12 13:24:47,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:24:47,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:24:47,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:24:47,308 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:24:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:24:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1057585694, now seen corresponding path program 1 times [2020-10-12 13:24:47,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:24:47,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958024733] [2020-10-12 13:24:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:24:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:47,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:52,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:52,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-12 13:24:52,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:24:52,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 13:24:52,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:24:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:24:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:24:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:52,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:52,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:24:52,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:24:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:24:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:52,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:24:52,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:52,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 13:24:52,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:52,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:24:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:24:52,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:24:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:24:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:24:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:24:53,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:24:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:24:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:24:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:24:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-12 13:24:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:24:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:24:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-12 13:24:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-12 13:24:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:24:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:24:53,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:24:53,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:24:53,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:24:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:24:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:24:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:24:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 13:24:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:24:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:24:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 288 proven. 146 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-12 13:24:53,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958024733] [2020-10-12 13:24:53,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:24:53,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:24:53,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229973806] [2020-10-12 13:24:53,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:24:53,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:24:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:24:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:24:53,926 INFO L87 Difference]: Start difference. First operand 97081 states and 125350 transitions. Second operand 7 states. [2020-10-12 13:25:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:25:26,037 INFO L93 Difference]: Finished difference Result 222811 states and 295297 transitions. [2020-10-12 13:25:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:25:26,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-12 13:25:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:25:26,437 INFO L225 Difference]: With dead ends: 222811 [2020-10-12 13:25:26,438 INFO L226 Difference]: Without dead ends: 126503 [2020-10-12 13:25:26,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:25:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126503 states. [2020-10-12 13:25:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126503 to 124900. [2020-10-12 13:25:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124900 states. [2020-10-12 13:25:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124900 states to 124900 states and 165437 transitions. [2020-10-12 13:25:28,893 INFO L78 Accepts]: Start accepts. Automaton has 124900 states and 165437 transitions. Word has length 481 [2020-10-12 13:25:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:25:28,893 INFO L479 AbstractCegarLoop]: Abstraction has 124900 states and 165437 transitions. [2020-10-12 13:25:28,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:25:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 124900 states and 165437 transitions. [2020-10-12 13:25:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-12 13:25:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:25:28,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:25:28,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:25:28,911 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:25:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:25:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash 277021611, now seen corresponding path program 1 times [2020-10-12 13:25:28,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:25:28,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10035681] [2020-10-12 13:25:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:25:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:25:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:25:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking...