/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:54,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:54,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:54,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:54,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:54,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:54,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:54,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:54,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:54,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:54,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:54,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:57:54,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:57:54,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:57:54,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:57:54,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:57:54,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:57:54,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:57:54,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:57:54,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:57:54,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:57:54,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:57:54,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:57:54,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:57:54,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:57:54,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:57:54,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:57:54,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:57:54,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:57:54,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:57:54,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:57:54,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:57:54,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:57:54,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:57:54,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:57:54,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:57:54,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:57:54,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:57:54,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:57:54,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:57:54,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:57:54,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:57:54,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:54,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:54,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:54,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:54,852 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:54,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:54,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:54,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:54,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:54,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:54,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:54,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:54,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:54,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:54,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:54,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:54,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:54,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:54,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:54,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:54,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:54,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:54,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:54,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:54,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:54,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:54,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:54,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:54,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:54,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:55,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:55,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:55,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:55,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:55,209 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:55,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-08-22 16:57:55,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4bb4afc/2a29b7382d8e4545b4b9426bd8f13c4e/FLAG301d37dcf [2020-08-22 16:57:55,750 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:55,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-08-22 16:57:55,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4bb4afc/2a29b7382d8e4545b4b9426bd8f13c4e/FLAG301d37dcf [2020-08-22 16:57:56,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4bb4afc/2a29b7382d8e4545b4b9426bd8f13c4e [2020-08-22 16:57:56,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:56,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:56,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:56,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:56,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:56,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71172dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56, skipping insertion in model container [2020-08-22 16:57:56,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:56,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:56,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:56,512 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:56,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:56,544 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:56,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56 WrapperNode [2020-08-22 16:57:56,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:56,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:56,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:56,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:56,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... [2020-08-22 16:57:56,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:56,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:56,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:56,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:56,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:57:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:57:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:56,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:56,925 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:57:56,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:56 BoogieIcfgContainer [2020-08-22 16:57:56,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:56,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:56,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:56,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:56,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:56" (1/3) ... [2020-08-22 16:57:56,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dff392c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:56, skipping insertion in model container [2020-08-22 16:57:56,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:56" (2/3) ... [2020-08-22 16:57:56,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dff392c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:56, skipping insertion in model container [2020-08-22 16:57:56,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:56" (3/3) ... [2020-08-22 16:57:56,936 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-08-22 16:57:56,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:56,954 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:56,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:56,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:56,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:56,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:56,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:56,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:56,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:56,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:56,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-22 16:57:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:57:57,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:57,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:57,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-08-22 16:57:57,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:57,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11303429] [2020-08-22 16:57:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:57,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11303429] [2020-08-22 16:57:57,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:57,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:57:57,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137306459] [2020-08-22 16:57:57,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:57:57,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:57,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:57:57,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:57:57,152 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-08-22 16:57:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:57,177 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-22 16:57:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:57:57,179 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-22 16:57:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:57,188 INFO L225 Difference]: With dead ends: 32 [2020-08-22 16:57:57,188 INFO L226 Difference]: Without dead ends: 13 [2020-08-22 16:57:57,192 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 [2020-08-22 16:57:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-22 16:57:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-22 16:57:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-22 16:57:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-08-22 16:57:57,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-08-22 16:57:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:57,233 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-08-22 16:57:57,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:57:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-08-22 16:57:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 16:57:57,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:57,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:57,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:57,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-08-22 16:57:57,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:57,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018472015] [2020-08-22 16:57:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:57,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018472015] [2020-08-22 16:57:57,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:57,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:57:57,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477697335] [2020-08-22 16:57:57,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:57:57,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:57,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:57:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:57:57,365 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-08-22 16:57:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:57,417 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-08-22 16:57:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:57:57,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 16:57:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:57,420 INFO L225 Difference]: With dead ends: 21 [2020-08-22 16:57:57,420 INFO L226 Difference]: Without dead ends: 16 [2020-08-22 16:57:57,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-22 16:57:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-22 16:57:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-22 16:57:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-22 16:57:57,427 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-22 16:57:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:57,428 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-22 16:57:57,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:57:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-22 16:57:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 16:57:57,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:57,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:57,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:57,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:57,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-08-22 16:57:57,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:57,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75759415] [2020-08-22 16:57:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:57,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75759415] [2020-08-22 16:57:57,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496847165] [2020-08-22 16:57:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:57:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:57,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:57,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:57,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-08-22 16:57:57,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108927065] [2020-08-22 16:57:57,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:57:57,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:57,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:57:57,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:57,745 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-08-22 16:57:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:57,809 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-08-22 16:57:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:57:57,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-08-22 16:57:57,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:57,811 INFO L225 Difference]: With dead ends: 24 [2020-08-22 16:57:57,811 INFO L226 Difference]: Without dead ends: 19 [2020-08-22 16:57:57,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-22 16:57:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-22 16:57:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 16:57:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-08-22 16:57:57,817 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-08-22 16:57:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:57,818 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-08-22 16:57:57,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:57:57,818 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-08-22 16:57:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 16:57:57,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:57,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:58,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:57:58,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-08-22 16:57:58,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:58,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934820380] [2020-08-22 16:57:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:58,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934820380] [2020-08-22 16:57:58,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378320149] [2020-08-22 16:57:58,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:58,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:57:58,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:58,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-08-22 16:57:58,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:58,245 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:58,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:58,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-08-22 16:57:58,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428235151] [2020-08-22 16:57:58,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:57:58,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:57:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:58,282 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-08-22 16:57:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:58,342 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-08-22 16:57:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:57:58,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-08-22 16:57:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:58,343 INFO L225 Difference]: With dead ends: 19 [2020-08-22 16:57:58,343 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:57:58,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:57:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:57:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:57:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:57:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:57:58,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-22 16:57:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:58,345 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:57:58,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:57:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:57:58,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:57:58,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:58,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:57:58,590 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:57:58,590 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:58,590 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:57:58,590 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:57:58,590 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:57:58,591 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:57:58,591 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:58,591 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 16:57:58,591 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:58,591 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:57:58,591 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-08-22 16:57:58,592 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-08-22 16:57:58,592 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-08-22 16:57:58,592 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-08-22 16:57:58,592 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-08-22 16:57:58,592 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-08-22 16:57:58,592 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (and (<= 1 main_~x~0) (<= 0 main_~y~0) (<= main_~y~0 main_~x~0)) [2020-08-22 16:57:58,592 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-08-22 16:57:58,593 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 16:57:58,593 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:57:58,593 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 16:57:58,593 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 16:57:58,593 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:57:58,594 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 16:57:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:58 BoogieIcfgContainer [2020-08-22 16:57:58,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:58,614 INFO L168 Benchmark]: Toolchain (without parser) took 2352.16 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 102.8 MB in the beginning and 196.8 MB in the end (delta: -94.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:57:58,615 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:57:58,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.66 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:58,617 INFO L168 Benchmark]: Boogie Preprocessor took 111.57 ms. Allocated memory was 146.8 MB in the beginning and 200.8 MB in the end (delta: 54.0 MB). Free memory was 93.2 MB in the beginning and 179.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:58,618 INFO L168 Benchmark]: RCFGBuilder took 270.85 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:58,619 INFO L168 Benchmark]: TraceAbstraction took 1681.92 ms. Allocated memory was 200.8 MB in the beginning and 234.9 MB in the end (delta: 34.1 MB). Free memory was 166.2 MB in the beginning and 196.8 MB in the end (delta: -30.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:58,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.66 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.57 ms. Allocated memory was 146.8 MB in the beginning and 200.8 MB in the end (delta: 54.0 MB). Free memory was 93.2 MB in the beginning and 179.9 MB in the end (delta: -86.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.85 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1681.92 ms. Allocated memory was 200.8 MB in the beginning and 234.9 MB in the end (delta: 34.1 MB). Free memory was 166.2 MB in the beginning and 196.8 MB in the end (delta: -30.6 MB). Peak memory consumption was 3.5 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (1 <= x && 0 <= y) && y <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 15 SDslu, 122 SDs, 0 SdLazy, 49 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3014 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...