/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:48,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:48,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:48,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:48,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:48,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:48,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:48,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:48,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:48,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:48,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:48,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:48,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:48,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:48,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:48,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:48,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:48,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:48,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:48,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:48,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:48,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:48,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:48,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:48,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:48,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:48,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:48,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:48,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:48,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:48,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:48,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:48,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:48,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:48,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:48,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:48,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:48,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:48,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:48,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:48,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:48,154 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 [2020-09-25 05:36:48,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:48,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:48,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:48,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:48,204 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:48,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:48,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:48,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:48,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:48,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:48,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:48,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:48,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:48,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:48,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:48,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:48,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:48,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:48,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:48,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:48,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:48,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:48,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:48,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:48,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:48,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:48,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:48,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:48,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:48,210 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:36:48,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:48,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:48,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:48,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:48,744 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:48,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 05:36:48,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d5b945f/1625fc68c7da4a918e1430fc2b0c1c47/FLAGd643d705c [2020-09-25 05:36:49,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:49,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 05:36:49,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d5b945f/1625fc68c7da4a918e1430fc2b0c1c47/FLAGd643d705c [2020-09-25 05:36:49,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4d5b945f/1625fc68c7da4a918e1430fc2b0c1c47 [2020-09-25 05:36:49,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:49,717 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:49,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:49,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:49,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:49,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:49, skipping insertion in model container [2020-09-25 05:36:49,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:49" (1/1) ... [2020-09-25 05:36:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:49,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:50,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:50,275 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:50,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:50,520 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:50,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50 WrapperNode [2020-09-25 05:36:50,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:50,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:50,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:50,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:50,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (1/1) ... [2020-09-25 05:36:50,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:50,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:50,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:50,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:50,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (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 [2020-09-25 05:36:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:50,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:50,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:52,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:52,167 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:52,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:52 BoogieIcfgContainer [2020-09-25 05:36:52,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:52,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:52,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:52,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:52,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:49" (1/3) ... [2020-09-25 05:36:52,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:52, skipping insertion in model container [2020-09-25 05:36:52,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:50" (2/3) ... [2020-09-25 05:36:52,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:52, skipping insertion in model container [2020-09-25 05:36:52,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:52" (3/3) ... [2020-09-25 05:36:52,189 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 05:36:52,201 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:52,213 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:52,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:52,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:52,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:52,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:52,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:52,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:52,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:52,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:52,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 05:36:52,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:52,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:52,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:52,373 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 05:36:52,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:52,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:36:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:36:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:36:57,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:36:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:36:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:36:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:36:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:36:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:57,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:36:57,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441832448] [2020-09-25 05:36:57,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:57,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:57,965 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:00,419 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:37:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:00,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 05:37:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:00,460 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:37:00,461 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:37:00,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:37:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:37:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:37:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:37:00,579 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 114 [2020-09-25 05:37:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:00,580 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:37:00,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:37:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 05:37:00,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:00,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:00,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:00,587 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 644121349, now seen corresponding path program 1 times [2020-09-25 05:37:00,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:00,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432733956] [2020-09-25 05:37:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 05:37:05,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:37:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:37:05,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 05:37:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 05:37:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:05,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:05,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:37:05,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:37:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:05,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:37:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:05,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432733956] [2020-09-25 05:37:05,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:05,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:05,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857817834] [2020-09-25 05:37:05,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:06,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:06,002 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:37:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:08,338 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 05:37:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:08,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 05:37:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:08,349 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 05:37:08,350 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 05:37:08,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 05:37:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 05:37:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 05:37:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 05:37:08,404 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 132 [2020-09-25 05:37:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:08,405 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 05:37:08,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 05:37:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:37:08,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:08,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:08,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:08,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash -897472656, now seen corresponding path program 1 times [2020-09-25 05:37:08,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:08,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904357292] [2020-09-25 05:37:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 05:37:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4263 [2020-09-25 05:37:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:12,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:37:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 05:37:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:12,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:12,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:37:12,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:12,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:12,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:37:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:37:12,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:12,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:37:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:12,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904357292] [2020-09-25 05:37:12,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:12,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:12,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165816681] [2020-09-25 05:37:12,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:12,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:12,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:12,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:12,986 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 05:37:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:15,152 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 05:37:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:15,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 05:37:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:15,165 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 05:37:15,165 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 05:37:15,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 05:37:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 05:37:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 05:37:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 05:37:15,253 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 138 [2020-09-25 05:37:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:15,255 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 05:37:15,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 05:37:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:37:15,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:15,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:15,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:15,271 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash -967266101, now seen corresponding path program 1 times [2020-09-25 05:37:15,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:15,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355211126] [2020-09-25 05:37:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 05:37:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:37:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:37:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:37:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:20,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:20,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:20,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:20,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:20,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 05:37:20,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:37:20,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:37:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355211126] [2020-09-25 05:37:20,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:20,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702161959] [2020-09-25 05:37:20,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:20,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:20,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:20,614 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 7 states. [2020-09-25 05:37:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:24,313 INFO L93 Difference]: Finished difference Result 5317 states and 7520 transitions. [2020-09-25 05:37:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:24,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 05:37:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:24,342 INFO L225 Difference]: With dead ends: 5317 [2020-09-25 05:37:24,343 INFO L226 Difference]: Without dead ends: 3675 [2020-09-25 05:37:24,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2020-09-25 05:37:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3288. [2020-09-25 05:37:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3288 states. [2020-09-25 05:37:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4013 transitions. [2020-09-25 05:37:24,482 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4013 transitions. Word has length 152 [2020-09-25 05:37:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:24,482 INFO L479 AbstractCegarLoop]: Abstraction has 3288 states and 4013 transitions. [2020-09-25 05:37:24,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:24,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4013 transitions. [2020-09-25 05:37:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:37:24,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:24,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:24,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:24,495 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash 130781434, now seen corresponding path program 1 times [2020-09-25 05:37:24,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:24,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708297132] [2020-09-25 05:37:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:37:29,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:37:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:37:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:37:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:37:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:37:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:29,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:37:29,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:29,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:29,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:37:29,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:29,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:37:29,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:29,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:37:29,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:29,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708297132] [2020-09-25 05:37:29,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:29,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:29,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678580730] [2020-09-25 05:37:29,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:29,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:29,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:29,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:29,789 INFO L87 Difference]: Start difference. First operand 3288 states and 4013 transitions. Second operand 7 states. [2020-09-25 05:37:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:32,590 INFO L93 Difference]: Finished difference Result 6713 states and 8298 transitions. [2020-09-25 05:37:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:32,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-25 05:37:32,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:32,608 INFO L225 Difference]: With dead ends: 6713 [2020-09-25 05:37:32,608 INFO L226 Difference]: Without dead ends: 3556 [2020-09-25 05:37:32,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-09-25 05:37:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3532. [2020-09-25 05:37:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3532 states. [2020-09-25 05:37:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4190 transitions. [2020-09-25 05:37:32,713 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4190 transitions. Word has length 157 [2020-09-25 05:37:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:32,714 INFO L479 AbstractCegarLoop]: Abstraction has 3532 states and 4190 transitions. [2020-09-25 05:37:32,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4190 transitions. [2020-09-25 05:37:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 05:37:32,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:32,725 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:32,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:32,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1456643231, now seen corresponding path program 1 times [2020-09-25 05:37:32,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:32,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406777649] [2020-09-25 05:37:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 05:37:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2290 [2020-09-25 05:37:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:35,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:37:35,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:35,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:37:35,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:35,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:35,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:35,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:35,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:35,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:37:35,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:35,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:37:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:35,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406777649] [2020-09-25 05:37:35,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:35,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:35,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578338001] [2020-09-25 05:37:35,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:35,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:35,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:35,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:35,329 INFO L87 Difference]: Start difference. First operand 3532 states and 4190 transitions. Second operand 7 states. [2020-09-25 05:37:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:36,565 INFO L93 Difference]: Finished difference Result 4563 states and 5343 transitions. [2020-09-25 05:37:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:36,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 05:37:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:36,576 INFO L225 Difference]: With dead ends: 4563 [2020-09-25 05:37:36,576 INFO L226 Difference]: Without dead ends: 2176 [2020-09-25 05:37:36,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:37:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-09-25 05:37:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2006. [2020-09-25 05:37:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-09-25 05:37:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2331 transitions. [2020-09-25 05:37:36,639 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2331 transitions. Word has length 170 [2020-09-25 05:37:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:36,640 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 2331 transitions. [2020-09-25 05:37:36,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2331 transitions. [2020-09-25 05:37:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:37:36,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:36,648 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, 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] [2020-09-25 05:37:36,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:37:36,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:36,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:36,649 INFO L82 PathProgramCache]: Analyzing trace with hash 761190216, now seen corresponding path program 1 times [2020-09-25 05:37:36,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:36,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547090398] [2020-09-25 05:37:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking...