/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.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:39:56,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:39:56,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:39:56,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:39:56,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:39:56,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:39:56,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:39:56,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:39:56,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:39:56,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:39:56,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:39:56,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:39:56,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:39:56,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:39:56,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:39:56,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:39:56,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:39:56,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:39:56,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:39:56,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:39:56,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:39:56,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:39:56,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:39:56,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:39:56,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:39:56,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:39:56,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:39:56,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:39:56,253 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 [2020-07-19 23:39:56,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:39:56,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:39:56,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:39:56,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:39:56,296 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:39:56,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:39:56,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:39:56,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:39:56,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:39:56,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:39:56,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:39:56,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:39:56,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:39:56,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:39:56,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:39:56,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:39:56,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:39:56,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:39:56,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:39:56,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:39:56,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:39:56,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:39:56,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:39:56,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:39:56,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:39:56,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:39:56,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:39:56,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:39:56,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:39:56,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:39:56,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:39:56,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:39:56,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:39:56,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:39:56,685 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:39:56,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2020-07-19 23:39:56,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c55fb9ca/72efb184934646f9bb41a494ec7f3c4d/FLAGb72ebbcaf [2020-07-19 23:39:57,232 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:39:57,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2020-07-19 23:39:57,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c55fb9ca/72efb184934646f9bb41a494ec7f3c4d/FLAGb72ebbcaf [2020-07-19 23:39:57,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c55fb9ca/72efb184934646f9bb41a494ec7f3c4d [2020-07-19 23:39:57,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:39:57,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:39:57,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:57,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:39:57,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:39:57,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a16dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57, skipping insertion in model container [2020-07-19 23:39:57,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:39:57,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:39:57,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:57,831 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:39:57,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:57,862 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:39:57,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57 WrapperNode [2020-07-19 23:39:57,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:57,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:39:57,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:39:57,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:39:57,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (1/1) ... [2020-07-19 23:39:57,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:39:57,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:39:57,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:39:57,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:39:57,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (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 [2020-07-19 23:39:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:39:58,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:39:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:39:58,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:39:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:39:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:39:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:39:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:39:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:39:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:39:58,296 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:39:58,297 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:39:58,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:58 BoogieIcfgContainer [2020-07-19 23:39:58,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:39:58,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:39:58,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:39:58,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:39:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:39:57" (1/3) ... [2020-07-19 23:39:58,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56d1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:58, skipping insertion in model container [2020-07-19 23:39:58,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:57" (2/3) ... [2020-07-19 23:39:58,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56d1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:58, skipping insertion in model container [2020-07-19 23:39:58,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:58" (3/3) ... [2020-07-19 23:39:58,315 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2020-07-19 23:39:58,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:39:58,341 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:39:58,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:39:58,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:39:58,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:39:58,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:39:58,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:39:58,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:39:58,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:39:58,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:39:58,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:39:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-19 23:39:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 23:39:58,519 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:58,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:39:58,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:58,526 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2020-07-19 23:39:58,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:58,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663459881] [2020-07-19 23:39:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ef4c9b [2020-07-19 23:39:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:58,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663459881] [2020-07-19 23:39:58,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:58,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:39:58,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727439431] [2020-07-19 23:39:58,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:39:58,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:58,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:39:58,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:39:58,706 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-19 23:39:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:58,740 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-07-19 23:39:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:39:58,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-19 23:39:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:58,755 INFO L225 Difference]: With dead ends: 30 [2020-07-19 23:39:58,755 INFO L226 Difference]: Without dead ends: 13 [2020-07-19 23:39:58,761 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 [2020-07-19 23:39:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-19 23:39:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-19 23:39:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-19 23:39:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-19 23:39:58,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-07-19 23:39:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:58,815 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-19 23:39:58,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:39:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-19 23:39:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-19 23:39:58,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:58,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:39:58,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:39:58,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:58,819 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2020-07-19 23:39:58,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:58,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302190050] [2020-07-19 23:39:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ef4c9b [2020-07-19 23:39:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:59,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302190050] [2020-07-19 23:39:59,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:59,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:39:59,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375831842] [2020-07-19 23:39:59,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:39:59,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:39:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:39:59,075 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-07-19 23:39:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:59,188 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-19 23:39:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:39:59,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-19 23:39:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:59,193 INFO L225 Difference]: With dead ends: 19 [2020-07-19 23:39:59,194 INFO L226 Difference]: Without dead ends: 14 [2020-07-19 23:39:59,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:39:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-19 23:39:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-19 23:39:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-19 23:39:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-19 23:39:59,210 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-07-19 23:39:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:59,210 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-19 23:39:59,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:39:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-19 23:39:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:39:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:59,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:39:59,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:39:59,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:59,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2020-07-19 23:39:59,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:59,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081887826] [2020-07-19 23:39:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ef4c9b [2020-07-19 23:39:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:59,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081887826] [2020-07-19 23:39:59,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177558486] [2020-07-19 23:39:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5099e947 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 [2020-07-19 23:39:59,640 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5099e947 issued 3 check-sat command(s) [2020-07-19 23:39:59,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:39:59,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 23:39:59,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:39:59,824 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:39:59,826 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:39:59,837 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:39:59,840 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-19 23:39:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:59,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:39:59,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-19 23:39:59,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368472424] [2020-07-19 23:39:59,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 23:39:59,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:59,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 23:39:59,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:39:59,925 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2020-07-19 23:40:00,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:00,162 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-07-19 23:40:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 23:40:00,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-07-19 23:40:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:00,164 INFO L225 Difference]: With dead ends: 24 [2020-07-19 23:40:00,164 INFO L226 Difference]: Without dead ends: 18 [2020-07-19 23:40:00,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-07-19 23:40:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-19 23:40:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-19 23:40:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-19 23:40:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-19 23:40:00,173 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2020-07-19 23:40:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:00,174 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-19 23:40:00,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 23:40:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-19 23:40:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:40:00,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:40:00,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:40:00,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:40:00,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:40:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:40:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2020-07-19 23:40:00,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:40:00,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66703011] [2020-07-19 23:40:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@21ef4c9b [2020-07-19 23:40:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:40:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:40:00,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66703011] [2020-07-19 23:40:00,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910637154] [2020-07-19 23:40:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@18875cf5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:40:00,678 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@18875cf5 issued 4 check-sat command(s) [2020-07-19 23:40:00,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:40:00,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-19 23:40:00,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:40:00,950 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:40:00,954 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:40:00,959 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:40:00,969 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-19 23:40:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:40:01,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:40:01,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 20 [2020-07-19 23:40:01,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713517752] [2020-07-19 23:40:01,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-19 23:40:01,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:40:01,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-19 23:40:01,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:40:01,045 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2020-07-19 23:40:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:40:01,585 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-19 23:40:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 23:40:01,587 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-07-19 23:40:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:40:01,589 INFO L225 Difference]: With dead ends: 21 [2020-07-19 23:40:01,589 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:40:01,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2020-07-19 23:40:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:40:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:40:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:40:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:40:01,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-19 23:40:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:40:01,593 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:40:01,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-19 23:40:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:40:01,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:40:01,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:40:01,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:40:01,947 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:40:01,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:40:01,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:40:01,948 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:40:01,948 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:40:01,948 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:40:01,949 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-07-19 23:40:01,949 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-07-19 23:40:01,949 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-19 23:40:01,949 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2020-07-19 23:40:01,949 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-07-19 23:40:01,949 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= main_~sn~0 (* 2 main_~n~0)) (<= .cse1 .cse0))) (and (= 1 main_~i~0) (= 0 main_~sn~0))) [2020-07-19 23:40:01,950 INFO L264 CegarLoopResult]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (let ((.cse0 (* 2 main_~n~0))) (and (<= main_~sn~0 .cse0) (<= .cse0 main_~sn~0))) (= 0 main_~sn~0)) [2020-07-19 23:40:01,950 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-07-19 23:40:01,950 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-07-19 23:40:01,950 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-19 23:40:01,950 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-19 23:40:01,951 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-19 23:40:01,951 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-07-19 23:40:01,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:40:01 BoogieIcfgContainer [2020-07-19 23:40:01,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:40:01,982 INFO L168 Benchmark]: Toolchain (without parser) took 4371.87 ms. Allocated memory was 145.2 MB in the beginning and 245.4 MB in the end (delta: 100.1 MB). Free memory was 102.7 MB in the beginning and 211.0 MB in the end (delta: -108.3 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,983 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.30 ms. Allocated memory is still 145.2 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,985 INFO L168 Benchmark]: Boogie Preprocessor took 125.70 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.8 MB in the beginning and 182.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,986 INFO L168 Benchmark]: RCFGBuilder took 314.77 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 170.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,987 INFO L168 Benchmark]: TraceAbstraction took 3670.81 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 169.5 MB in the beginning and 211.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:40:01,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.30 ms. Allocated memory is still 145.2 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.70 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.8 MB in the beginning and 182.4 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.77 ms. Allocated memory is still 203.4 MB. Free memory was 182.4 MB in the beginning and 170.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3670.81 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 169.5 MB in the beginning and 211.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 119.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && sn <= 2 * n) && 2 * i <= sn + 2) || (1 == i && 0 == sn) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 11 SDslu, 173 SDs, 0 SdLazy, 204 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 12 PreInvPairs, 21 NumberOfFragments, 48 HoareAnnotationTreeSize, 12 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 5964 SizeOfPredicates, 6 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/20 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...