/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:12:43,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:12:43,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:12:43,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:12:43,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:12:43,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:12:43,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:12:43,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:12:43,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:12:43,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:12:43,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:12:43,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:12:43,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:12:43,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:12:43,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:12:43,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:12:43,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:12:43,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:12:43,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:12:43,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:12:43,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:12:43,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:12:43,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:12:43,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:12:43,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:12:43,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:12:43,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:12:43,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:12:43,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:12:43,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:12:43,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:12:43,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:12:43,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:12:43,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:12:43,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:12:43,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:12:43,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:12:43,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:12:43,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:12:43,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:12:43,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:12:43,230 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 [2020-10-15 02:12:43,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:12:43,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:12:43,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:12:43,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:12:43,273 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:12:43,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:12:43,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:12:43,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:12:43,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:12:43,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:12:43,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:12:43,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:12:43,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:12:43,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:12:43,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:12:43,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:12:43,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:12:43,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:12:43,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:12:43,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:12:43,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:12:43,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:43,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:12:43,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:12:43,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:12:43,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:12:43,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:12:43,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:12:43,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:12:43,582 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:12:43,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-15 02:12:43,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca4ef054/c6c247ab96684215a3c6f87fb8c8b60a/FLAGe4d6c4b10 [2020-10-15 02:12:44,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:12:44,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-15 02:12:44,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca4ef054/c6c247ab96684215a3c6f87fb8c8b60a/FLAGe4d6c4b10 [2020-10-15 02:12:44,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ca4ef054/c6c247ab96684215a3c6f87fb8c8b60a [2020-10-15 02:12:44,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:12:44,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:12:44,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:44,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:12:44,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:12:44,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5211d524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44, skipping insertion in model container [2020-10-15 02:12:44,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:12:44,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:12:44,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:44,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:12:44,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:44,799 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:12:44,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44 WrapperNode [2020-10-15 02:12:44,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:44,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:12:44,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:12:44,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:12:44,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (1/1) ... [2020-10-15 02:12:44,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:12:44,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:12:44,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:12:44,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:12:44,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (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 [2020-10-15 02:12:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:12:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:12:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-15 02:12:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:12:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:12:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:12:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:12:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:12:45,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:12:45,314 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:12:45,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:45 BoogieIcfgContainer [2020-10-15 02:12:45,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:12:45,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:12:45,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:12:45,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:12:45,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:44" (1/3) ... [2020-10-15 02:12:45,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2046e795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:45, skipping insertion in model container [2020-10-15 02:12:45,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:44" (2/3) ... [2020-10-15 02:12:45,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2046e795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:45, skipping insertion in model container [2020-10-15 02:12:45,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:45" (3/3) ... [2020-10-15 02:12:45,333 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2020-10-15 02:12:45,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:12:45,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:12:45,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:12:45,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:12:45,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:12:45,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:12:45,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:12:45,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:12:45,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:12:45,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:12:45,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:12:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-15 02:12:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:12:45,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:45,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:45,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-15 02:12:45,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:45,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080904413] [2020-10-15 02:12:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:46,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:46,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:12:46,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:12:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1331 [2020-10-15 02:12:46,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:46,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:12:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:12:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:12:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:12:47,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:47,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 02:12:47,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:47,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 02:12:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 02:12:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:47,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080904413] [2020-10-15 02:12:47,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:47,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:12:47,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537191110] [2020-10-15 02:12:47,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:47,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:47,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:47,397 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-15 02:12:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:47,859 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-15 02:12:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:12:47,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:12:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:47,874 INFO L225 Difference]: With dead ends: 89 [2020-10-15 02:12:47,874 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:12:47,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:12:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:12:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-15 02:12:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:12:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-15 02:12:47,976 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 32 [2020-10-15 02:12:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:47,994 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-15 02:12:47,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-15 02:12:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 02:12:47,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:47,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:47,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:12:47,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1328588870, now seen corresponding path program 1 times [2020-10-15 02:12:47,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:47,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783367261] [2020-10-15 02:12:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:12:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-15 02:12:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:12:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:48,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:12:48,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:49,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:12:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:49,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:49,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:49,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:12:49,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:49,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:49,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783367261] [2020-10-15 02:12:49,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:49,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:12:49,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872976192] [2020-10-15 02:12:49,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:12:49,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:12:49,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:12:49,063 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-15 02:12:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:49,205 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-15 02:12:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:12:49,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-15 02:12:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:49,208 INFO L225 Difference]: With dead ends: 66 [2020-10-15 02:12:49,208 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:12:49,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:12:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:12:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-15 02:12:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:12:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-15 02:12:49,227 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 36 [2020-10-15 02:12:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:49,228 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-15 02:12:49,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:12:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-15 02:12:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:12:49,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:49,235 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:49,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:12:49,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:49,236 INFO L82 PathProgramCache]: Analyzing trace with hash 981704641, now seen corresponding path program 2 times [2020-10-15 02:12:49,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:49,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163604395] [2020-10-15 02:12:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:54,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:12:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:12:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:12:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:12:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:12:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 02:12:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:54,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:54,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-15 02:12:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:54,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:12:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:12:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:54,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:54,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:12:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-15 02:12:54,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:54,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:12:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 02:12:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:55,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 02:12:55,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:12:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:12:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 48 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-15 02:12:55,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163604395] [2020-10-15 02:12:55,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:55,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:12:55,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049862914] [2020-10-15 02:12:55,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:55,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:55,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:55,074 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 11 states. [2020-10-15 02:12:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:55,869 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-15 02:12:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:12:55,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-15 02:12:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:55,872 INFO L225 Difference]: With dead ends: 96 [2020-10-15 02:12:55,872 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 02:12:55,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:12:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 02:12:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-15 02:12:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 02:12:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-15 02:12:55,907 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 56 [2020-10-15 02:12:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:55,907 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-15 02:12:55,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-15 02:12:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:12:55,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:55,912 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:55,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:12:55,913 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1783061631, now seen corresponding path program 1 times [2020-10-15 02:12:55,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:55,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629889439] [2020-10-15 02:12:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:00,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:00,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:13:00,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:13:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:13:00,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:00,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:13:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:13:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:13:00,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1