/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:36:25,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:36:25,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:36:25,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:36:25,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:36:25,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:36:25,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:36:25,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:36:25,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:36:25,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:36:25,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:36:25,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:36:25,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:36:25,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:36:25,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:36:25,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:36:25,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:36:25,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:36:25,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:36:25,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:36:25,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:36:25,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:36:25,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:36:25,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:36:25,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:36:25,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:36:25,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:36:25,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:36:25,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:36:25,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:36:25,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:36:25,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:36:25,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:36:25,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:36:25,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:36:25,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:36:25,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:36:25,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:36:25,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:36:25,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:36:25,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:36:25,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:36:25,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:36:25,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:36:25,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:36:25,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:36:25,416 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:36:25,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:36:25,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:36:25,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:36:25,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:36:25,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:36:25,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:36:25,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:36:25,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:36:25,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:36:25,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:36:25,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:36:25,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:36:25,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:36:25,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:36:25,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:36:25,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:36:25,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:25,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:36:25,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:36:25,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:36:25,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:36:25,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:36:25,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:36:25,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:36:25,423 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:36:25,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:36:25,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:36:25,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:36:25,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:36:25,937 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:36:25,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-21 12:36:26,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f43513f2d/d1102af6875047a595300ed7aeaef766/FLAGec51bffc7 [2020-09-21 12:36:26,593 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:36:26,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-21 12:36:26,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f43513f2d/d1102af6875047a595300ed7aeaef766/FLAGec51bffc7 [2020-09-21 12:36:26,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f43513f2d/d1102af6875047a595300ed7aeaef766 [2020-09-21 12:36:26,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:36:26,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:36:26,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:26,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:36:26,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:36:26,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:26" (1/1) ... [2020-09-21 12:36:27,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:26, skipping insertion in model container [2020-09-21 12:36:27,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:36:26" (1/1) ... [2020-09-21 12:36:27,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:36:27,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:36:27,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:27,291 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:36:27,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:36:27,325 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:36:27,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27 WrapperNode [2020-09-21 12:36:27,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:36:27,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:36:27,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:36:27,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:36:27,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... [2020-09-21 12:36:27,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:36:27,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:36:27,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:36:27,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:36:27,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:36:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:36:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:36:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:36:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:36:27,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:36:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:36:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:36:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:36:27,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:36:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:36:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:36:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:36:27,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:36:27,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:36:27,776 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:36:27,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:27 BoogieIcfgContainer [2020-09-21 12:36:27,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:36:27,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:36:27,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:36:27,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:36:27,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:36:26" (1/3) ... [2020-09-21 12:36:27,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df47984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:27, skipping insertion in model container [2020-09-21 12:36:27,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:36:27" (2/3) ... [2020-09-21 12:36:27,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df47984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:36:27, skipping insertion in model container [2020-09-21 12:36:27,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:36:27" (3/3) ... [2020-09-21 12:36:27,794 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-09-21 12:36:27,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:36:27,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:36:27,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:36:27,909 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:36:27,909 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:36:27,909 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:36:27,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:36:27,910 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:36:27,910 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:36:27,910 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:36:27,910 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:36:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-21 12:36:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:36:27,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:27,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:27,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:27,946 INFO L82 PathProgramCache]: Analyzing trace with hash -917653371, now seen corresponding path program 1 times [2020-09-21 12:36:27,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:27,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224388744] [2020-09-21 12:36:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:36:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:36:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-21 12:36:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:36:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:36:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:28,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224388744] [2020-09-21 12:36:28,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:28,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 12:36:28,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643954414] [2020-09-21 12:36:28,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 12:36:28,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 12:36:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:36:28,551 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-09-21 12:36:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:28,578 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-09-21 12:36:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 12:36:28,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-21 12:36:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:28,591 INFO L225 Difference]: With dead ends: 35 [2020-09-21 12:36:28,592 INFO L226 Difference]: Without dead ends: 15 [2020-09-21 12:36:28,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:36:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-21 12:36:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-21 12:36:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-21 12:36:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-09-21 12:36:28,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-09-21 12:36:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:28,640 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-09-21 12:36:28,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 12:36:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-09-21 12:36:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:36:28,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:28,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:28,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:36:28,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:28,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1750778295, now seen corresponding path program 1 times [2020-09-21 12:36:28,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:28,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119618320] [2020-09-21 12:36:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:36:28,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:28,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-21 12:36:28,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:36:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:36:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:36:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:28,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:28,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:28,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:28,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:28,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119618320] [2020-09-21 12:36:28,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:28,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:36:28,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130889674] [2020-09-21 12:36:28,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:36:28,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:28,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:36:28,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:28,950 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-09-21 12:36:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:28,967 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-09-21 12:36:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:36:28,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 12:36:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:28,969 INFO L225 Difference]: With dead ends: 24 [2020-09-21 12:36:28,969 INFO L226 Difference]: Without dead ends: 15 [2020-09-21 12:36:28,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:36:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-21 12:36:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-21 12:36:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-21 12:36:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-09-21 12:36:28,975 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-09-21 12:36:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:28,975 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-09-21 12:36:28,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:36:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-09-21 12:36:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:36:28,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:28,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:28,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:36:28,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -941431669, now seen corresponding path program 1 times [2020-09-21 12:36:28,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:28,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742085674] [2020-09-21 12:36:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:29,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:36:29,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:36:29,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:36:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:36:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:29,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742085674] [2020-09-21 12:36:29,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:29,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:36:29,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437340773] [2020-09-21 12:36:29,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:36:29,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:36:29,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:36:29,291 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-09-21 12:36:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:29,331 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-09-21 12:36:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:36:29,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:36:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:29,333 INFO L225 Difference]: With dead ends: 23 [2020-09-21 12:36:29,333 INFO L226 Difference]: Without dead ends: 17 [2020-09-21 12:36:29,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:36:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-09-21 12:36:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-09-21 12:36:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-21 12:36:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-09-21 12:36:29,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-09-21 12:36:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:29,340 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-09-21 12:36:29,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:36:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-09-21 12:36:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:36:29,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:29,341 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:29,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:36:29,341 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 447870728, now seen corresponding path program 1 times [2020-09-21 12:36:29,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:29,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946427708] [2020-09-21 12:36:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:29,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:36:29,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:36:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-21 12:36:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:36:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:36:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:36:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:29,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:29,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:29,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946427708] [2020-09-21 12:36:29,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:36:29,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:36:29,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035656267] [2020-09-21 12:36:29,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:36:29,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:36:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:36:29,645 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-09-21 12:36:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:29,671 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-09-21 12:36:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:36:29,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-21 12:36:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:29,672 INFO L225 Difference]: With dead ends: 26 [2020-09-21 12:36:29,673 INFO L226 Difference]: Without dead ends: 17 [2020-09-21 12:36:29,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:36:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-09-21 12:36:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-09-21 12:36:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-21 12:36:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-21 12:36:29,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 16 [2020-09-21 12:36:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:29,678 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-21 12:36:29,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:36:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-21 12:36:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:36:29,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:29,679 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:29,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:36:29,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1257217354, now seen corresponding path program 1 times [2020-09-21 12:36:29,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:29,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669084489] [2020-09-21 12:36:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:29,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:29,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:36:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:36:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:36:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:36:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:30,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:30,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:30,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669084489] [2020-09-21 12:36:30,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:30,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:36:30,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290177588] [2020-09-21 12:36:30,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:36:30,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:30,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:36:30,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:36:30,084 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-09-21 12:36:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:30,282 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-09-21 12:36:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:36:30,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-21 12:36:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:30,283 INFO L225 Difference]: With dead ends: 26 [2020-09-21 12:36:30,283 INFO L226 Difference]: Without dead ends: 20 [2020-09-21 12:36:30,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:36:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-21 12:36:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-09-21 12:36:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 12:36:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-21 12:36:30,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2020-09-21 12:36:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:30,289 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-21 12:36:30,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:36:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-21 12:36:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:36:30,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:30,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:30,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:36:30,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1335969749, now seen corresponding path program 2 times [2020-09-21 12:36:30,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:30,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854138797] [2020-09-21 12:36:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:30,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:30,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:30,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:36:30,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-21 12:36:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:36:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:30,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:36:30,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:30,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:30,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:36:30,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:36:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:31,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854138797] [2020-09-21 12:36:31,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:31,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:36:31,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572818300] [2020-09-21 12:36:31,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:36:31,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:36:31,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:36:31,004 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-09-21 12:36:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:31,178 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-21 12:36:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:36:31,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-21 12:36:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:31,180 INFO L225 Difference]: With dead ends: 29 [2020-09-21 12:36:31,180 INFO L226 Difference]: Without dead ends: 23 [2020-09-21 12:36:31,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:36:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-21 12:36:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-21 12:36:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-21 12:36:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-21 12:36:31,186 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2020-09-21 12:36:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:31,186 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-21 12:36:31,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:36:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-21 12:36:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:36:31,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:31,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:31,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:36:31,189 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1396202070, now seen corresponding path program 3 times [2020-09-21 12:36:31,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:31,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530126121] [2020-09-21 12:36:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:31,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:36:31,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-21 12:36:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:36:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:36:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:31,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:36:31,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:31,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530126121] [2020-09-21 12:36:31,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:31,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:36:31,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682183742] [2020-09-21 12:36:31,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:36:31,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:36:31,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:36:31,979 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-09-21 12:36:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:34,332 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-09-21 12:36:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:36:34,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-09-21 12:36:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:34,334 INFO L225 Difference]: With dead ends: 32 [2020-09-21 12:36:34,334 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 12:36:34,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:36:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 12:36:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-21 12:36:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 12:36:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-21 12:36:34,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2020-09-21 12:36:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:34,340 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-21 12:36:34,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:36:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-21 12:36:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:36:34,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:36:34,342 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:36:34,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:36:34,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:36:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:36:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash -480947253, now seen corresponding path program 4 times [2020-09-21 12:36:34,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:36:34,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230628765] [2020-09-21 12:36:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:36:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:36:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-21 12:36:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:36:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:36:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:36:34,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:36:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:36:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:36:35,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:36:35,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:36:35,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:36:35,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:36:35,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:36:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:36:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:36:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:36:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:36:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:36:35,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230628765] [2020-09-21 12:36:35,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:36:35,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:36:35,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140855748] [2020-09-21 12:36:35,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:36:35,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:36:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:36:35,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:36:35,527 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 13 states. [2020-09-21 12:36:35,698 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-09-21 12:36:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:36:36,192 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-09-21 12:36:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:36:36,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-09-21 12:36:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:36:36,195 INFO L225 Difference]: With dead ends: 26 [2020-09-21 12:36:36,195 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:36:36,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:36:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:36:36,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:36:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:36:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:36:36,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-21 12:36:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:36:36,197 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:36:36,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:36:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:36:36,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:36:36,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:36:36,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:36:36,372 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 12:36:36,372 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:36,373 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:36:36,373 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:36:36,373 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:36:36,373 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-09-21 12:36:36,374 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-09-21 12:36:36,375 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-21 12:36:36,377 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-09-21 12:36:36,377 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-21 12:36:36,377 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-09-21 12:36:36,377 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-09-21 12:36:36,377 INFO L268 CegarLoopResult]: For program point L24-2(lines 13 38) no Hoare annotation was computed. [2020-09-21 12:36:36,378 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse5 (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0)) (.cse4 (* 4294967296 (div main_~b~0 4294967296)))) (let ((.cse0 (< .cse5 (+ .cse4 main_~a~0 1))) (.cse1 (<= (+ .cse4 main_~a~0) .cse5))) (or (and .cse0 (<= 0 main_~b~0) .cse1) (let ((.cse2 (div main_~i~0 2))) (let ((.cse3 (div (+ main_~i~0 (* .cse2 (- 2))) 4294967296))) (and .cse0 (<= main_~i~0 (+ (* 2 .cse2) (* 4294967296 .cse3))) .cse1 (< 0 (+ (* 2147483648 .cse3) .cse2)))))))) [2020-09-21 12:36:36,379 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-21 12:36:36,379 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:36,379 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 12:36:36,379 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-21 12:36:36,380 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-21 12:36:36,380 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-21 12:36:36,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:36:36 BoogieIcfgContainer [2020-09-21 12:36:36,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:36:36,400 INFO L168 Benchmark]: Toolchain (without parser) took 9437.41 ms. Allocated memory was 138.9 MB in the beginning and 281.5 MB in the end (delta: 142.6 MB). Free memory was 101.4 MB in the beginning and 168.5 MB in the end (delta: -67.1 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:36,402 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:36:36,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.86 ms. Allocated memory is still 138.9 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:36,405 INFO L168 Benchmark]: Boogie Preprocessor took 116.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:36,406 INFO L168 Benchmark]: RCFGBuilder took 340.96 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 165.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:36,411 INFO L168 Benchmark]: TraceAbstraction took 8606.77 ms. Allocated memory was 200.8 MB in the beginning and 281.5 MB in the end (delta: 80.7 MB). Free memory was 165.1 MB in the beginning and 168.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:36:36,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.86 ms. Allocated memory is still 138.9 MB. Free memory was 100.8 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.04 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 179.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.96 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 165.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8606.77 ms. Allocated memory was 200.8 MB in the beginning and 281.5 MB in the end (delta: 80.7 MB). Free memory was 165.1 MB in the beginning and 168.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 28 SDslu, 390 SDs, 0 SdLazy, 184 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 109 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 251 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 38911 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 2/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...