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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:13:20,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:13:20,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:13:20,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 02:13:20,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:13:20,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:13:20,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:13:20,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:13:20,140 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:13:20,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:13:20,141 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:13:20,141 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:13:20,141 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:13:20,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:13:20,142 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:13:20,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:13:20,144 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:13:20,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:13:20,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:13:20,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:13:20,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:13:20,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:13:20,146 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:13:20,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:13:20,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:13:20,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:13:20,146 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:13:20,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:13:20,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:13:20,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:13:20,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:13:20,147 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:13:20,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:13:20,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:13:20,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:13:20,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:13:20,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:13:20,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:13:20,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:13:20,217 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:13:20,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-10 02:13:20,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47851f14/7c2ad07017d645528311b61c47c3b6f2/FLAG61a033dd8 [2019-09-10 02:13:20,713 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:13:20,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-09-10 02:13:20,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47851f14/7c2ad07017d645528311b61c47c3b6f2/FLAG61a033dd8 [2019-09-10 02:13:21,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47851f14/7c2ad07017d645528311b61c47c3b6f2 [2019-09-10 02:13:21,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:13:21,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:13:21,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:13:21,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:13:21,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:13:21,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5115c4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21, skipping insertion in model container [2019-09-10 02:13:21,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,140 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:13:21,158 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:13:21,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:13:21,398 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:13:21,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:13:21,459 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:13:21,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21 WrapperNode [2019-09-10 02:13:21,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:13:21,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:13:21,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:13:21,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:13:21,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (1/1) ... [2019-09-10 02:13:21,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:13:21,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:13:21,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:13:21,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:13:21,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (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 [2019-09-10 02:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:13:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 02:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:13:21,907 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:13:21,907 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 02:13:21,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:13:21 BoogieIcfgContainer [2019-09-10 02:13:21,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:13:21,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:13:21,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:13:21,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:13:21,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:13:21" (1/3) ... [2019-09-10 02:13:21,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260b34de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:13:21, skipping insertion in model container [2019-09-10 02:13:21,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:13:21" (2/3) ... [2019-09-10 02:13:21,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260b34de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:13:21, skipping insertion in model container [2019-09-10 02:13:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:13:21" (3/3) ... [2019-09-10 02:13:21,937 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-09-10 02:13:21,958 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:13:21,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:13:22,011 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:13:22,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:13:22,035 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:13:22,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:13:22,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:13:22,036 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:13:22,036 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:13:22,036 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:13:22,036 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:13:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-10 02:13:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-10 02:13:22,063 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:13:22,064 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:13:22,066 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:13:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:13:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 964689295, now seen corresponding path program 1 times [2019-09-10 02:13:22,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:13:22,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:22,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:13:22,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:22,114 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:13:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:13:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:13:22,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:13:22,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:13:22,293 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:13:22,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:13:22,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:13:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:13:22,316 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-09-10 02:13:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:13:22,368 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-09-10 02:13:22,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:13:22,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-10 02:13:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:13:22,380 INFO L225 Difference]: With dead ends: 27 [2019-09-10 02:13:22,381 INFO L226 Difference]: Without dead ends: 20 [2019-09-10 02:13:22,382 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:13:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-10 02:13:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2019-09-10 02:13:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-10 02:13:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-09-10 02:13:22,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-09-10 02:13:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:13:22,417 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-09-10 02:13:22,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:13:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-09-10 02:13:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 02:13:22,418 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:13:22,418 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:13:22,418 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:13:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:13:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2096975293, now seen corresponding path program 1 times [2019-09-10 02:13:22,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:13:22,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:22,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:13:22,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:13:22,421 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:13:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:13:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:13:22,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:13:22,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:13:22,646 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:13:22,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:13:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:13:22,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:13:22,648 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-09-10 02:13:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:13:22,752 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-09-10 02:13:22,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:13:22,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-09-10 02:13:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:13:22,753 INFO L225 Difference]: With dead ends: 18 [2019-09-10 02:13:22,753 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:13:22,754 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:13:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:13:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:13:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:13:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:13:22,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-09-10 02:13:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:13:22,756 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:13:22,756 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:13:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:13:22,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:13:22,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:13:22 BoogieIcfgContainer [2019-09-10 02:13:22,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:13:22,768 INFO L168 Benchmark]: Toolchain (without parser) took 1640.84 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.3 MB in the beginning and 127.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,770 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.8 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.23 ms. Allocated memory is still 135.8 MB. Free memory was 88.9 MB in the beginning and 78.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,775 INFO L168 Benchmark]: Boogie Preprocessor took 153.86 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 78.9 MB in the beginning and 179.4 MB in the end (delta: -100.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,775 INFO L168 Benchmark]: RCFGBuilder took 293.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 166.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,777 INFO L168 Benchmark]: TraceAbstraction took 853.45 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 127.8 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:13:22,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.8 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.23 ms. Allocated memory is still 135.8 MB. Free memory was 88.9 MB in the beginning and 78.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.86 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 78.9 MB in the beginning and 179.4 MB in the end (delta: -100.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 166.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 853.45 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 127.8 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 21 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...