/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:32:43,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:32:43,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:32:43,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:32:43,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:32:43,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:32:43,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:32:43,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:32:43,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:32:43,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:32:43,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:32:43,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:32:43,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:32:43,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:32:43,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:32:43,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:32:43,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:32:43,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:32:43,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:32:43,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:32:43,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:32:43,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:32:43,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:32:43,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:32:43,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:32:43,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:32:43,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:32:43,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:32:43,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:32:43,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:32:43,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:32:43,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:32:43,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:32:43,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:32:43,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:32:43,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:32:43,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:32:43,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:32:43,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:32:43,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:32:43,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:32:43,770 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 11:32:43,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:32:43,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:32:43,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:32:43,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:32:43,798 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:32:43,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:32:43,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:32:43,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:32:43,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:32:43,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:32:43,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:32:43,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:32:43,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:32:43,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:32:43,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:32:43,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:32:43,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:32:43,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:32:43,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:32:43,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:32:43,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:32:43,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:32:43,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:32:43,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:32:43,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:32:43,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:32:43,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:32:43,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:32:43,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:32:43,804 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:32:44,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:32:44,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:32:44,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:32:44,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:32:44,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:32:44,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-21 11:32:44,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75a6e1c1/952394773b874f209e6443573964b26e/FLAG808c6234a [2020-09-21 11:32:44,909 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:32:44,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-21 11:32:44,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75a6e1c1/952394773b874f209e6443573964b26e/FLAG808c6234a [2020-09-21 11:32:45,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75a6e1c1/952394773b874f209e6443573964b26e [2020-09-21 11:32:45,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:32:45,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:32:45,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:45,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:32:45,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:32:45,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a86aac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45, skipping insertion in model container [2020-09-21 11:32:45,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:32:45,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:32:45,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:45,553 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:32:45,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:32:45,596 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:32:45,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45 WrapperNode [2020-09-21 11:32:45,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:32:45,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:32:45,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:32:45,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:32:45,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (1/1) ... [2020-09-21 11:32:45,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:32:45,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:32:45,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:32:45,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:32:45,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (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 11:32:45,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:32:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:32:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:32:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:32:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:32:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:32:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:32:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:32:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:32:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:32:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:32:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:32:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:32:45,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:32:45,993 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:32:45,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:45 BoogieIcfgContainer [2020-09-21 11:32:45,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:32:45,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:32:45,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:32:46,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:32:46,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:45" (1/3) ... [2020-09-21 11:32:46,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a79ebc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:46, skipping insertion in model container [2020-09-21 11:32:46,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:45" (2/3) ... [2020-09-21 11:32:46,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a79ebc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:46, skipping insertion in model container [2020-09-21 11:32:46,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:45" (3/3) ... [2020-09-21 11:32:46,006 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-09-21 11:32:46,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:32:46,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:32:46,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:32:46,079 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:32:46,079 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:32:46,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:32:46,080 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:32:46,080 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:32:46,080 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:32:46,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:32:46,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:32:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-21 11:32:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:32:46,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:46,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:46,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:46,117 INFO L82 PathProgramCache]: Analyzing trace with hash -712399266, now seen corresponding path program 1 times [2020-09-21 11:32:46,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:46,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775658702] [2020-09-21 11:32:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:32:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:32:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:46,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,311 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:46,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:32:46,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:46,332 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 11:32:46,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775658702] [2020-09-21 11:32:46,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:46,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:32:46,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604393647] [2020-09-21 11:32:46,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:32:46,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:32:46,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:32:46,416 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-09-21 11:32:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:46,482 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-09-21 11:32:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:32:46,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-21 11:32:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:46,494 INFO L225 Difference]: With dead ends: 33 [2020-09-21 11:32:46,494 INFO L226 Difference]: Without dead ends: 14 [2020-09-21 11:32:46,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:32:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-21 11:32:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-09-21 11:32:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-09-21 11:32:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-09-21 11:32:46,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2020-09-21 11:32:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:46,540 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-09-21 11:32:46,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:32:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-09-21 11:32:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 11:32:46,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:46,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:46,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:32:46,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:46,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:46,542 INFO L82 PathProgramCache]: Analyzing trace with hash -721634476, now seen corresponding path program 1 times [2020-09-21 11:32:46,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:46,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911892010] [2020-09-21 11:32:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,620 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,620 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:32:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:32:46,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:32:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:32:46,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:46,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:46,816 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 11:32:46,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911892010] [2020-09-21 11:32:46,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:32:46,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:32:46,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577171608] [2020-09-21 11:32:46,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:32:46,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:32:46,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:32:46,820 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2020-09-21 11:32:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:46,924 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-09-21 11:32:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:32:46,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-21 11:32:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:46,928 INFO L225 Difference]: With dead ends: 21 [2020-09-21 11:32:46,928 INFO L226 Difference]: Without dead ends: 16 [2020-09-21 11:32:46,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:32:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-21 11:32:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-09-21 11:32:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-21 11:32:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-09-21 11:32:46,936 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-09-21 11:32:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:46,936 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-09-21 11:32:46,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:32:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-09-21 11:32:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:32:46,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:46,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:46,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:32:46,938 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -955216975, now seen corresponding path program 1 times [2020-09-21 11:32:46,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:46,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214986434] [2020-09-21 11:32:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:46,984 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:46,984 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:46,984 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:46,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:46,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:32:46,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:32:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:47,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:47,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:47,109 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:32:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:32:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:47,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214986434] [2020-09-21 11:32:47,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:47,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:47,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589733266] [2020-09-21 11:32:47,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:47,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:47,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:47,119 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2020-09-21 11:32:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:47,278 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-09-21 11:32:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:32:47,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-21 11:32:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:47,279 INFO L225 Difference]: With dead ends: 23 [2020-09-21 11:32:47,280 INFO L226 Difference]: Without dead ends: 16 [2020-09-21 11:32:47,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:32:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-21 11:32:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-21 11:32:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-21 11:32:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-09-21 11:32:47,290 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2020-09-21 11:32:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:47,291 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-09-21 11:32:47,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:32:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-09-21 11:32:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:32:47,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:32:47,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:32:47,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:32:47,293 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:32:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:32:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash -897958673, now seen corresponding path program 1 times [2020-09-21 11:32:47,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:32:47,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24964982] [2020-09-21 11:32:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:32:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:47,339 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:47,339 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:47,340 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:47,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:47,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:32:47,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:47,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:32:47,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:32:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:32:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:32:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:32:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:32:47,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:32:47,522 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:32:47,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:32:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:32:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:32:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:32:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:32:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:32:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:32:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:32:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:32:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:32:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:32:47,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24964982] [2020-09-21 11:32:47,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:32:47,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:32:47,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922727687] [2020-09-21 11:32:47,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:32:47,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:32:47,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:32:47,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:32:47,533 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-09-21 11:32:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:32:47,655 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-09-21 11:32:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:32:47,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-21 11:32:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:32:47,656 INFO L225 Difference]: With dead ends: 16 [2020-09-21 11:32:47,656 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:32:47,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:32:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:32:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:32:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:32:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:32:47,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-21 11:32:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:32:47,658 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:32:47,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:32:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:32:47,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:32:47,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:32:47,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:32:47,812 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:32:47,813 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-21 11:32:47,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:32:47,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:32:47,813 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:32:47,814 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:32:47,814 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:32:47,814 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-09-21 11:32:47,814 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-21 11:32:47,814 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2020-09-21 11:32:47,814 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-21 11:32:47,815 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-21 11:32:47,815 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-09-21 11:32:47,815 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-09-21 11:32:47,815 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-09-21 11:32:47,815 INFO L264 CegarLoopResult]: At program point L25-2(lines 23 29) the Hoare annotation is: (let ((.cse0 (div main_~i~0 3))) (or (and (<= main_~i~0 (* 3 .cse0)) (<= 3 main_~i~0)) (and (<= 0 main_~i~0) (<= main_~i~0 .cse0)))) [2020-09-21 11:32:47,815 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-21 11:32:47,816 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (let ((.cse0 (div main_~i~0 3))) (or (and (<= main_~i~0 (* 3 .cse0)) (<= 3 main_~i~0)) (and (<= 0 main_~i~0) (<= main_~i~0 .cse0)))) [2020-09-21 11:32:47,816 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed. [2020-09-21 11:32:47,816 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-09-21 11:32:47,816 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-21 11:32:47,816 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-09-21 11:32:47,817 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-09-21 11:32:47,817 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-09-21 11:32:47,817 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-09-21 11:32:47,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:32:47 BoogieIcfgContainer [2020-09-21 11:32:47,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:32:47,852 INFO L168 Benchmark]: Toolchain (without parser) took 2562.55 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 102.0 MB in the beginning and 161.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,854 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.93 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,859 INFO L168 Benchmark]: Boogie Preprocessor took 111.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,864 INFO L168 Benchmark]: RCFGBuilder took 288.70 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,866 INFO L168 Benchmark]: TraceAbstraction took 1849.34 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 161.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:32:47,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.93 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.29 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.9 MB in the beginning and 180.3 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.70 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1849.34 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 161.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (i <= 3 * (i / 3) && 3 <= i) || (0 <= i && i <= i / 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 51 SDslu, 72 SDs, 0 SdLazy, 129 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 49 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 73 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1906 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...