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-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:53,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:53,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:53,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:53,742 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 [2019-09-20 13:25:53,771 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:53,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:53,772 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:53,772 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:53,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:53,773 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:53,773 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:53,774 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:53,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:53,774 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:53,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:53,775 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:53,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:53,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:53,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:53,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:53,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:53,776 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:53,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:53,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:53,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:53,777 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:53,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:53,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:53,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:53,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:53,778 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:53,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:53,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:53,778 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:53,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:53,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:53,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:53,845 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:53,846 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:53,847 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2019-09-20 13:25:53,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a857016e/619839e0a2024c45a50e99fd362ba8bc/FLAG0fc327d6d [2019-09-20 13:25:54,360 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:54,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2019-09-20 13:25:54,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a857016e/619839e0a2024c45a50e99fd362ba8bc/FLAG0fc327d6d [2019-09-20 13:25:54,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a857016e/619839e0a2024c45a50e99fd362ba8bc [2019-09-20 13:25:54,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:54,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:54,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:54,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:54,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:54,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:54" (1/1) ... [2019-09-20 13:25:54,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a49921e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:54, skipping insertion in model container [2019-09-20 13:25:54,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:54" (1/1) ... [2019-09-20 13:25:54,783 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:54,805 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:54,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:54,974 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:54,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:55,003 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:55,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55 WrapperNode [2019-09-20 13:25:55,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:55,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:55,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:55,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:55,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (1/1) ... [2019-09-20 13:25:55,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:55,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:55,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:55,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:55,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (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 [2019-09-20 13:25:55,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:55,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:55,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:55,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:55,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:55,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:55,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:55,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:55,363 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:55,363 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:55,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:55 BoogieIcfgContainer [2019-09-20 13:25:55,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:55,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:55,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:55,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:55,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:54" (1/3) ... [2019-09-20 13:25:55,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a6d673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:55, skipping insertion in model container [2019-09-20 13:25:55,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:55" (2/3) ... [2019-09-20 13:25:55,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a6d673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:55, skipping insertion in model container [2019-09-20 13:25:55,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:55" (3/3) ... [2019-09-20 13:25:55,373 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2019-09-20 13:25:55,382 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:55,390 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:55,405 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:55,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:55,428 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:55,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:55,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:55,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:55,429 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:55,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:55,429 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-20 13:25:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 13:25:55,449 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:55,450 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:55,452 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1632835705, now seen corresponding path program 1 times [2019-09-20 13:25:55,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:55,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:55,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:55,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:55,503 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:55,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:55,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:25:55,785 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:55,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:25:55,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:25:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:55,822 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-09-20 13:25:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:55,930 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-09-20 13:25:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:25:55,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-20 13:25:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:55,944 INFO L225 Difference]: With dead ends: 29 [2019-09-20 13:25:55,944 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 13:25:55,946 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:25:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 13:25:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 13:25:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 13:25:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 13:25:55,992 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-09-20 13:25:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:55,993 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 13:25:55,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:25:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 13:25:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:25:55,994 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:55,995 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:55,995 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash -886162946, now seen corresponding path program 1 times [2019-09-20 13:25:55,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:55,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:55,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:55,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:55,998 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:56,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:56,188 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:56,190 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2019-09-20 13:25:56,193 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [12], [19], [21], [28], [31], [33], [39], [40], [41], [43] [2019-09-20 13:25:56,231 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:56,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:56,347 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:56,350 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 2 different actions 8 times. Widened at 1 different actions 2 times. Performed 63 root evaluator evaluations with a maximum evaluation depth of 5. Performed 63 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2019-09-20 13:25:56,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:56,355 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:56,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:56,355 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 13:25:56,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:56,382 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:56,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:25:56,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:56,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:56,565 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:25:56,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:56,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2019-09-20 13:25:56,654 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:56,656 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-20 13:25:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-20 13:25:56,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:25:56,657 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2019-09-20 13:25:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:56,893 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-09-20 13:25:56,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:25:56,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-09-20 13:25:56,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:56,894 INFO L225 Difference]: With dead ends: 14 [2019-09-20 13:25:56,894 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:56,896 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:25:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:56,897 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-09-20 13:25:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:56,897 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:56,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-20 13:25:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:56,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:56,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:56 BoogieIcfgContainer [2019-09-20 13:25:56,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:56,906 INFO L168 Benchmark]: Toolchain (without parser) took 2138.63 ms. Allocated memory was 132.1 MB in the beginning and 222.3 MB in the end (delta: 90.2 MB). Free memory was 87.7 MB in the beginning and 179.7 MB in the end (delta: -92.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:25:56,907 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:56,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.24 ms. Allocated memory is still 132.1 MB. Free memory was 87.3 MB in the beginning and 78.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:56,909 INFO L168 Benchmark]: Boogie Preprocessor took 111.40 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.2 MB in the beginning and 176.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:56,911 INFO L168 Benchmark]: RCFGBuilder took 248.72 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 164.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:56,913 INFO L168 Benchmark]: TraceAbstraction took 1537.75 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 163.6 MB in the beginning and 179.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:56,918 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 132.1 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.24 ms. Allocated memory is still 132.1 MB. Free memory was 87.3 MB in the beginning and 78.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.40 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 78.2 MB in the beginning and 176.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 248.72 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 164.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1537.75 ms. Allocated memory was 199.2 MB in the beginning and 222.3 MB in the end (delta: 23.1 MB). Free memory was 163.6 MB in the beginning and 179.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 94 SDs, 0 SdLazy, 59 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s 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, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 2569 SizeOfPredicates, 5 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...