/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/ps5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:05:10,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:05:10,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:05:10,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:05:10,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:05:10,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:05:10,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:05:10,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:05:10,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:05:10,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:05:10,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:05:10,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:05:10,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:05:10,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:05:10,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:05:10,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:05:10,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:05:10,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:05:10,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:05:10,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:05:10,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:05:10,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:05:10,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:05:10,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:05:10,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:05:10,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:05:10,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:05:10,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:05:10,358 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 04:05:10,373 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:05:10,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:05:10,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:05:10,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:05:10,375 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:05:10,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:05:10,375 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:05:10,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:05:10,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:05:10,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:05:10,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:05:10,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:05:10,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:05:10,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:05:10,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:05:10,377 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:05:10,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:05:10,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:05:10,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:05:10,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:05:10,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:05:10,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:05:10,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:05:10,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:05:10,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:05:10,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:05:10,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:05:10,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:05:10,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:05:10,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:05:10,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:05:10,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:05:10,683 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:05:10,683 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:05:10,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps5.c [2019-11-07 04:05:10,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db573b010/90b41e1e085f4dbdb8e398aefc3f6d28/FLAG89c58d6a4 [2019-11-07 04:05:11,224 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:05:11,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps5.c [2019-11-07 04:05:11,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db573b010/90b41e1e085f4dbdb8e398aefc3f6d28/FLAG89c58d6a4 [2019-11-07 04:05:11,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db573b010/90b41e1e085f4dbdb8e398aefc3f6d28 [2019-11-07 04:05:11,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:05:11,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:05:11,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:05:11,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:05:11,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:05:11,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a277098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11, skipping insertion in model container [2019-11-07 04:05:11,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:05:11,655 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:05:11,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:05:11,840 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:05:11,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:05:11,868 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:05:11,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11 WrapperNode [2019-11-07 04:05:11,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:05:11,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:05:11,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:05:11,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:05:11,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (1/1) ... [2019-11-07 04:05:11,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:05:11,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:05:11,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:05:11,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:05:11,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (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 04:05:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:05:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:05:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:05:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:05:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:05:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:05:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:05:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:05:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:05:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:05:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:05:12,264 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:05:12,264 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:05:12,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:12 BoogieIcfgContainer [2019-11-07 04:05:12,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:05:12,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:05:12,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:05:12,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:05:12,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:05:11" (1/3) ... [2019-11-07 04:05:12,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1253837e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:12, skipping insertion in model container [2019-11-07 04:05:12,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:11" (2/3) ... [2019-11-07 04:05:12,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1253837e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:12, skipping insertion in model container [2019-11-07 04:05:12,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:12" (3/3) ... [2019-11-07 04:05:12,292 INFO L109 eAbstractionObserver]: Analyzing ICFG ps5.c [2019-11-07 04:05:12,314 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:05:12,330 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:05:12,355 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:05:12,376 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:05:12,377 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:05:12,377 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:05:12,377 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:05:12,377 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:05:12,377 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:05:12,378 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:05:12,378 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:05:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 04:05:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:05:12,396 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:12,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:12,398 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash -122887910, now seen corresponding path program 1 times [2019-11-07 04:05:12,411 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:12,411 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125758757] [2019-11-07 04:05:12,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:12,500 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 04:05:12,501 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125758757] [2019-11-07 04:05:12,502 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:05:12,502 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:05:12,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468219750] [2019-11-07 04:05:12,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:05:12,507 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:05:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:05:12,519 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 04:05:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:12,541 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-07 04:05:12,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:05:12,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 04:05:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:12,552 INFO L225 Difference]: With dead ends: 35 [2019-11-07 04:05:12,552 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 04:05:12,555 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 04:05:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 04:05:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 04:05:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 04:05:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-07 04:05:12,592 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-11-07 04:05:12,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:12,593 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-07 04:05:12,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:05:12,593 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-07 04:05:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:05:12,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:12,596 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:12,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:12,597 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-11-07 04:05:12,597 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:12,597 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316671468] [2019-11-07 04:05:12,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:12,605 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:05:12,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177969294] [2019-11-07 04:05:12,605 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 04:05:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:12,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 04:05:12,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:05:12,726 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 04:05:12,727 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:05:12,880 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 04:05:12,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316671468] [2019-11-07 04:05:12,881 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:05:12,881 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177969294] [2019-11-07 04:05:12,881 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:05:12,882 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 04:05:12,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230337558] [2019-11-07 04:05:12,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:05:12,884 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:05:12,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:05:12,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:05:12,885 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-11-07 04:05:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:05:13,173 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-07 04:05:13,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:05:13,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 04:05:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:05:13,176 INFO L225 Difference]: With dead ends: 27 [2019-11-07 04:05:13,178 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 04:05:13,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:05:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 04:05:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-07 04:05:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 04:05:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-07 04:05:13,189 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2019-11-07 04:05:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:05:13,189 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-07 04:05:13,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:05:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-07 04:05:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 04:05:13,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:05:13,191 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:05:13,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:05:13,393 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:05:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:05:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1054216485, now seen corresponding path program 1 times [2019-11-07 04:05:13,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:05:13,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233234851] [2019-11-07 04:05:13,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:05:13,402 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:05:13,403 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17854515] [2019-11-07 04:05:13,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:05:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:05:13,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-07 04:05:13,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:05:15,535 WARN L860 $PredicateComparison]: unable to prove that (and (= c_main_~y~0 0) (= 0 (mod (+ (* (* (* (* c_main_~y~0 10) c_main_~y~0) c_main_~y~0) 29) c_main_~y~0 (* (* (* (* (* c_main_~y~0 15) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29) (* (* (* (* (* (* c_main_~y~0 6) c_main_~y~0) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29)) (- 30))) (= c_main_~c~0 0)) is different from true [2019-11-07 04:05:17,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2019-11-07 04:05:17,682 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:05:19,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:21,896 WARN L838 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* (* (* (* c_main_~y~0 10) c_main_~y~0) c_main_~y~0) 29) c_main_~y~0 (* (* (* (* (* c_main_~y~0 15) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29) (* (* (* (* (* (* c_main_~y~0 6) c_main_~y~0) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29)) (- 30)))) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (let ((.cse0 (+ c_main_~y~0 1))) (= (* main_~k~0 .cse0) (* .cse0 .cse0))) (<= main_~k~0 c_main_~c~0)))) is different from false [2019-11-07 04:05:23,912 WARN L860 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* (* (* (* c_main_~y~0 10) c_main_~y~0) c_main_~y~0) 29) c_main_~y~0 (* (* (* (* (* c_main_~y~0 15) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29) (* (* (* (* (* (* c_main_~y~0 6) c_main_~y~0) c_main_~y~0) c_main_~y~0) c_main_~y~0) 29)) (- 30)))) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (let ((.cse0 (+ c_main_~y~0 1))) (= (* main_~k~0 .cse0) (* .cse0 .cse0))) (<= main_~k~0 c_main_~c~0)))) is different from true [2019-11-07 04:05:23,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:25,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:29,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:05:36,043 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (or (= 0 (mod (+ (* (* (* (* v_main_~y~0_BEFORE_CALL_8 10) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 6) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 15) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) v_main_~y~0_BEFORE_CALL_8) (- 30))) (let ((.cse0 (+ v_main_~y~0_BEFORE_CALL_8 1))) (= (* .cse0 .cse0) (* main_~k~0 .cse0)))))) is different from true [2019-11-07 04:05:46,083 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((main_~k~0 Int) (v_main_~y~0_BEFORE_CALL_8 Int)) (or (= 0 (mod (+ (* (* (* (* v_main_~y~0_BEFORE_CALL_8 10) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 6) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) (* (* (* (* (* v_main_~y~0_BEFORE_CALL_8 15) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) v_main_~y~0_BEFORE_CALL_8) 29) v_main_~y~0_BEFORE_CALL_8) (- 30))) (let ((.cse0 (+ v_main_~y~0_BEFORE_CALL_8 1))) (= (* .cse0 .cse0) (* main_~k~0 .cse0))))) (= 0 c___VERIFIER_assert_~cond)) is different from true [2019-11-07 04:05:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 6 times theorem prover too weak. 6 trivial. 3 not checked. [2019-11-07 04:05:46,143 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233234851] [2019-11-07 04:05:46,143 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:05:46,144 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17854515] [2019-11-07 04:05:46,144 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [3111601] [2019-11-07 04:05:46,195 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-07 04:05:46,195 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:05:46,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:05:46,218 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:05:46,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:05:46,268 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:05:50,756 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2019-11-07 04:05:50,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:05:50,762 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:05:57,326 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61