/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:36,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:36,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:36,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:36:36,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:36:36,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:36:36,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:36:36,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:36:36,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:36:36,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:36:36,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:36:36,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:36:36,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:36,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:36,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:36,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:36,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:36,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:36,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:36,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:36,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:36,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:36,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:36,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:36,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:36:36,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:36:36,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:36:36,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:36:36,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:36:36,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:36:36,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:36:36,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:36:36,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:36:36,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:36:36,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:36:36,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:36:36,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:36:36,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:36:36,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:36,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:36,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:36,632 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 [2019-11-07 00:36:36,646 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:36,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:36,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:36,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:36,648 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:36,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:36,649 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:36,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:36,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:36,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:36,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:36,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:36,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:36,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:36,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:36,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:36,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:36,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:36,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:36,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:36,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:36,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:36,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:36,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:36:36,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:36,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:36,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:36,934 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:36,935 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:36,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2019-11-07 00:36:37,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a563eef0/6f3292177f97438b8e6156f8deea963d/FLAG25155b2ed [2019-11-07 00:36:37,517 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:37,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2019-11-07 00:36:37,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a563eef0/6f3292177f97438b8e6156f8deea963d/FLAG25155b2ed [2019-11-07 00:36:37,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a563eef0/6f3292177f97438b8e6156f8deea963d [2019-11-07 00:36:37,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:37,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:37,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:37,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:37,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:37,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:37" (1/1) ... [2019-11-07 00:36:37,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0dd968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:37, skipping insertion in model container [2019-11-07 00:36:37,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:37" (1/1) ... [2019-11-07 00:36:37,891 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:37,909 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:38,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:38,090 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:38,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:38,118 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:38,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38 WrapperNode [2019-11-07 00:36:38,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:38,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:38,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:38,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:38,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:38,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:38,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:38,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:38,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (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 [2019-11-07 00:36:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:36:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:38,462 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:38,462 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:36:38,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:38 BoogieIcfgContainer [2019-11-07 00:36:38,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:38,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:38,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:38,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:38,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:37" (1/3) ... [2019-11-07 00:36:38,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f25412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:38, skipping insertion in model container [2019-11-07 00:36:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38" (2/3) ... [2019-11-07 00:36:38,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f25412d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:38, skipping insertion in model container [2019-11-07 00:36:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:38" (3/3) ... [2019-11-07 00:36:38,472 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2019-11-07 00:36:38,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:38,490 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:38,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:38,542 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:38,543 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:38,543 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:38,544 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:38,544 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:38,544 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:38,544 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:38,545 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:36:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:38,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:38,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:38,579 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:38,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-11-07 00:36:38,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:38,597 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282834918] [2019-11-07 00:36:38,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:38,710 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282834918] [2019-11-07 00:36:38,710 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:38,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:36:38,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406218614] [2019-11-07 00:36:38,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:38,718 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:38,736 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 00:36:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:38,761 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-07 00:36:38,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:38,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:38,776 INFO L225 Difference]: With dead ends: 35 [2019-11-07 00:36:38,776 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 00:36:38,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 00:36:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 00:36:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 00:36:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-07 00:36:38,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-07 00:36:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:38,846 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-07 00:36:38,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-07 00:36:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:38,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:38,850 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:38,850 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-11-07 00:36:38,851 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:38,851 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598093301] [2019-11-07 00:36:38,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:38,860 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:38,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134748951] [2019-11-07 00:36:38,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:38,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:38,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:39,034 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:39,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598093301] [2019-11-07 00:36:39,096 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:39,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134748951] [2019-11-07 00:36:39,097 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:39,097 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 00:36:39,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521761206] [2019-11-07 00:36:39,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:39,099 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:39,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:39,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:39,101 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-11-07 00:36:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:39,173 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-07 00:36:39,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:39,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 00:36:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:39,175 INFO L225 Difference]: With dead ends: 19 [2019-11-07 00:36:39,175 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:39,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:39,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-07 00:36:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:39,178 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:39,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:39,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:39,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:39,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:39,461 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:39,461 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:39,461 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:39,462 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:39,462 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:39,462 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:39,462 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 39) the Hoare annotation is: true [2019-11-07 00:36:39,463 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) main_~a~0) (+ main_~x~0 (* (* main_~a~0 main_~z~0) main_~y~0))) [2019-11-07 00:36:39,464 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2019-11-07 00:36:39,464 INFO L439 ceAbstractionStarter]: At program point L27-2(lines 27 36) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) main_~a~0) (+ main_~x~0 (* (* main_~a~0 main_~z~0) main_~y~0))) [2019-11-07 00:36:39,465 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 39) no Hoare annotation was computed. [2019-11-07 00:36:39,465 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (+ (* main_~z~0 main_~x~0) main_~a~0) (+ main_~x~0 (* (* main_~a~0 main_~z~0) main_~y~0))) [2019-11-07 00:36:39,465 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 39) no Hoare annotation was computed. [2019-11-07 00:36:39,465 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-07 00:36:39,465 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-11-07 00:36:39,466 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-07 00:36:39,466 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-07 00:36:39,466 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-11-07 00:36:39,467 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-11-07 00:36:39,467 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-07 00:36:39,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:39 BoogieIcfgContainer [2019-11-07 00:36:39,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:39,499 INFO L168 Benchmark]: Toolchain (without parser) took 1622.59 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.4 MB in the beginning and 122.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,503 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.03 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,507 INFO L168 Benchmark]: Boogie Preprocessor took 111.12 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 180.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,508 INFO L168 Benchmark]: RCFGBuilder took 233.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 169.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,510 INFO L168 Benchmark]: TraceAbstraction took 1030.62 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 122.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:39,520 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.03 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.12 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 180.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.35 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 169.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1030.62 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 122.5 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: z * x + a == x + a * z * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 9 SDslu, 39 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 44 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 657 SizeOfPredicates, 4 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...