/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/array-crafted/bAnd5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:35:33,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:35:33,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:35:33,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:35:33,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:35:33,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:35:33,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:35:33,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:35:33,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:35:33,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:35:33,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:35:33,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:35:33,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:35:33,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:35:33,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:35:33,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:35:33,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:35:33,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:35:33,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:35:33,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:35:33,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:35:33,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:35:33,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:35:33,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:35:33,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:35:33,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:35:33,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:35:33,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:35:33,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:35:33,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:35:33,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:35:33,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:35:33,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:35:33,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:35:33,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:35:33,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:35:33,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:35:33,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:35:33,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:35:33,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:35:33,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:35:33,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:35:33,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:35:33,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:35:33,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:35:33,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:35:33,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:35:33,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:35:33,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:35:33,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:35:33,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:35:33,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:35:33,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:35:33,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:35:33,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:35:33,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:35:33,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:35:33,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:35:33,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:35:33,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:35:33,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:35:33,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:35:33,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:35:33,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:33,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:35:33,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:35:33,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:35:33,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:35:33,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:35:33,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:35:33,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:35:33,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:35:33,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd5.i [2020-10-14 17:35:33,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14385b1f9/28ff93a6a70249fc8a57b7ab4b86c752/FLAGba181d55c [2020-10-14 17:35:34,219 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:35:34,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd5.i [2020-10-14 17:35:34,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14385b1f9/28ff93a6a70249fc8a57b7ab4b86c752/FLAGba181d55c [2020-10-14 17:35:34,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14385b1f9/28ff93a6a70249fc8a57b7ab4b86c752 [2020-10-14 17:35:34,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:35:34,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:35:34,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:34,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:35:34,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:35:34,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,629 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 14.10 05:35:34, skipping insertion in model container [2020-10-14 17:35:34,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:34,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:35:34,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:35:34,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:34,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:35:34,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:35:34,928 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:35:34,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34 WrapperNode [2020-10-14 17:35:34,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:35:34,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:35:34,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:35:34,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:35:35,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... [2020-10-14 17:35:35,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:35:35,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:35:35,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:35:35,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:35:35,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:35:35,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:35:35,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:35:35,128 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-14 17:35:35,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:35:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:35:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:35:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-14 17:35:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:35:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:35:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:35:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:35:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:35:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:35:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:35:35,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:35:35,378 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:35:35,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:35 BoogieIcfgContainer [2020-10-14 17:35:35,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:35:35,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:35:35,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:35:35,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:35:35,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:34" (1/3) ... [2020-10-14 17:35:35,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b702c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:35, skipping insertion in model container [2020-10-14 17:35:35,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:34" (2/3) ... [2020-10-14 17:35:35,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b702c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:35, skipping insertion in model container [2020-10-14 17:35:35,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:35" (3/3) ... [2020-10-14 17:35:35,390 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2020-10-14 17:35:35,402 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:35:35,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:35:35,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:35:35,451 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:35:35,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:35:35,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:35:35,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:35:35,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:35:35,452 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:35:35,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:35:35,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:35:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 17:35:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:35:35,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:35,482 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] [2020-10-14 17:35:35,483 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2020-10-14 17:35:35,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:35,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648213109] [2020-10-14 17:35:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:35:36,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:36,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-14 17:35:36,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:35:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:35:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:35:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:35:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:36,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:35:36,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:35:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 17:35:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 17:35:36,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:36,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:36,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:35:36,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:35:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:36,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:36,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:36,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:35:36,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:35:36,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:36,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:35:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 17:35:36,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648213109] [2020-10-14 17:35:36,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:35:36,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:35:36,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120598688] [2020-10-14 17:35:36,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:35:36,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:36,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:35:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:35:37,006 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2020-10-14 17:35:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:37,330 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-10-14 17:35:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:35:37,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 17:35:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:37,346 INFO L225 Difference]: With dead ends: 64 [2020-10-14 17:35:37,346 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:35:37,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:35:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:35:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 17:35:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:35:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 17:35:37,443 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2020-10-14 17:35:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:37,444 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 17:35:37,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:35:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 17:35:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:35:37,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:37,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 17:35:37,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:35:37,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1520877022, now seen corresponding path program 1 times [2020-10-14 17:35:37,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:37,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743732071] [2020-10-14 17:35:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 17:35:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:35:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-14 17:35:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:35:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 17:35:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:38,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:38,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:35:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:35:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 17:35:38,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:35:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:35:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:35:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 17:35:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:35:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:35:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:35:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:35:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 17:35:38,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743732071] [2020-10-14 17:35:38,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:35:38,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:35:38,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040664323] [2020-10-14 17:35:38,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:35:38,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:35:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:38,610 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-14 17:35:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:38,758 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-14 17:35:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:35:38,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 17:35:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:38,760 INFO L225 Difference]: With dead ends: 42 [2020-10-14 17:35:38,761 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:35:38,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:35:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:35:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 17:35:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:35:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:35:38,769 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 39 [2020-10-14 17:35:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:38,771 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:35:38,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:35:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:35:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:35:38,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:38,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 17:35:38,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:35:38,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:38,774 INFO L82 PathProgramCache]: Analyzing trace with hash 548780096, now seen corresponding path program 1 times [2020-10-14 17:35:38,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:38,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418768799] [2020-10-14 17:35:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:35:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 17:35:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:35:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:35:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:35:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:35:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:35:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:38,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:38,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:38,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:38,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:38,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:38,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 17:35:38,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418768799] [2020-10-14 17:35:38,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:35:38,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:35:38,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354461454] [2020-10-14 17:35:38,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:35:38,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:38,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:35:38,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:35:38,909 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 4 states. [2020-10-14 17:35:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:38,979 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-14 17:35:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:35:38,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 17:35:38,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:38,980 INFO L225 Difference]: With dead ends: 51 [2020-10-14 17:35:38,980 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:35:38,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:35:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:35:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 17:35:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 17:35:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 17:35:38,988 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 41 [2020-10-14 17:35:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:38,988 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 17:35:38,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:35:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 17:35:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:35:38,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:38,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-10-14 17:35:38,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:35:38,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:38,990 INFO L82 PathProgramCache]: Analyzing trace with hash -425189182, now seen corresponding path program 1 times [2020-10-14 17:35:38,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:38,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082460553] [2020-10-14 17:35:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:35:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 17:35:39,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:35:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:35:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:35:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:39,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:39,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 17:35:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:35:39,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:35:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:39,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:35:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:39,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:35:39,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:35:39,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:39,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:35:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:35:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 17:35:39,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082460553] [2020-10-14 17:35:39,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:39,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:35:39,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179159277] [2020-10-14 17:35:39,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:35:39,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:35:39,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:39,157 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-14 17:35:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:39,247 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-14 17:35:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:35:39,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 17:35:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:39,249 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:35:39,249 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:35:39,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:35:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:35:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 17:35:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 17:35:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 17:35:39,256 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-14 17:35:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 17:35:39,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:35:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 17:35:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:35:39,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:39,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:39,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:35:39,258 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash -106794812, now seen corresponding path program 2 times [2020-10-14 17:35:39,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:39,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887386585] [2020-10-14 17:35:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 17:35:39,279 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 17:35:39,279 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 17:35:39,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:35:39,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:35:39 BoogieIcfgContainer [2020-10-14 17:35:39,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 17:35:39,306 INFO L168 Benchmark]: Toolchain (without parser) took 4686.79 ms. Allocated memory was 146.8 MB in the beginning and 276.3 MB in the end (delta: 129.5 MB). Free memory was 103.4 MB in the beginning and 200.4 MB in the end (delta: -97.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,307 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.44 ms. Allocated memory is still 146.8 MB. Free memory was 103.4 MB in the beginning and 92.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,309 INFO L168 Benchmark]: Boogie Preprocessor took 137.86 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,309 INFO L168 Benchmark]: RCFGBuilder took 314.37 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 161.9 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,310 INFO L168 Benchmark]: TraceAbstraction took 3920.19 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 161.9 MB in the beginning and 200.4 MB in the end (delta: -38.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-10-14 17:35:39,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.44 ms. Allocated memory is still 146.8 MB. Free memory was 103.4 MB in the beginning and 92.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.86 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.37 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 161.9 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3920.19 ms. Allocated memory was 202.4 MB in the beginning and 276.3 MB in the end (delta: 73.9 MB). Free memory was 161.9 MB in the beginning and 200.4 MB in the end (delta: -38.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 14. Possible FailurePath: [L6] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND FALSE !(i < N) [L34] CALL, EXPR bAnd(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res & x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L34] RET, EXPR bAnd(x) [L34] ret = bAnd(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp [L37] CALL, EXPR bAnd(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res & x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L37] RET, EXPR bAnd(x) [L37] ret2 = bAnd(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; [L39] COND TRUE i