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 -i ../../../trunk/examples/svcomp/nla-digbench/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:37,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:37,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:37,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:37,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:37,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:37,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:37,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:37,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:37,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:37,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:37,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:37,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:37,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:37,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:37,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:37,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:37,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:37,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:37,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:37,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:37,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:37,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:37,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:37,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:17:37,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:37,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:37,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:37,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:37,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:37,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:37,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:37,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:37,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:37,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:37,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:37,120 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 [2019-10-14 23:17:37,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:37,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:37,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:37,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:37,135 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:37,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:37,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:37,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:37,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:37,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:37,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:37,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:37,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:37,137 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:37,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:37,138 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:37,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:37,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:37,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:37,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:37,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:37,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:37,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:37,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:37,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:37,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:37,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:37,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:37,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:37,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:37,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:37,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:37,452 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:37,452 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:37,453 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2019-10-14 23:17:37,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151a759c5/a35f4b5915a7476fa6265932f875e02e/FLAG71a922843 [2019-10-14 23:17:37,973 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:37,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2019-10-14 23:17:37,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151a759c5/a35f4b5915a7476fa6265932f875e02e/FLAG71a922843 [2019-10-14 23:17:38,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151a759c5/a35f4b5915a7476fa6265932f875e02e [2019-10-14 23:17:38,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:38,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:38,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:38,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:38,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:38,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ff5150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38, skipping insertion in model container [2019-10-14 23:17:38,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,404 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:38,422 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:38,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:38,569 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:38,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:38,596 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:38,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38 WrapperNode [2019-10-14 23:17:38,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:38,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:38,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:38,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:38,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (1/1) ... [2019-10-14 23:17:38,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:38,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:38,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:38,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:38,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (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 [2019-10-14 23:17:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:17:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:38,907 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:38,907 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:38,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:38 BoogieIcfgContainer [2019-10-14 23:17:38,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:38,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:38,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:38,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:38,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:38" (1/3) ... [2019-10-14 23:17:38,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606f3374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:38, skipping insertion in model container [2019-10-14 23:17:38,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:38" (2/3) ... [2019-10-14 23:17:38,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606f3374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:38, skipping insertion in model container [2019-10-14 23:17:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:38" (3/3) ... [2019-10-14 23:17:38,916 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2019-10-14 23:17:38,925 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:38,932 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:38,943 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:38,965 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:38,966 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:38,966 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:38,966 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:38,966 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:38,966 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:38,966 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:38,966 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-14 23:17:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:38,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:38,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:38,987 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:38,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:38,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-10-14 23:17:38,998 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:38,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837670350] [2019-10-14 23:17:38,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:38,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:38,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:39,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837670350] [2019-10-14 23:17:39,102 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:39,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:39,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746249760] [2019-10-14 23:17:39,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:39,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:39,122 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-14 23:17:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:39,143 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-10-14 23:17:39,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:39,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:39,154 INFO L225 Difference]: With dead ends: 35 [2019-10-14 23:17:39,154 INFO L226 Difference]: Without dead ends: 15 [2019-10-14 23:17:39,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-14 23:17:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-14 23:17:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-14 23:17:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-14 23:17:39,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-14 23:17:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:39,199 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-14 23:17:39,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-14 23:17:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:39,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:39,200 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:39,201 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-10-14 23:17:39,201 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:39,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785555826] [2019-10-14 23:17:39,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:39,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:39,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:39,209 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:39,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608453396] [2019-10-14 23:17:39,210 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 [2019-10-14 23:17:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:39,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 23:17:39,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:39,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785555826] [2019-10-14 23:17:39,427 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:39,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608453396] [2019-10-14 23:17:39,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:39,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:39,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749047028] [2019-10-14 23:17:39,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:39,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:39,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:39,431 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-10-14 23:17:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:39,642 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-14 23:17:39,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:39,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:17:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:39,644 INFO L225 Difference]: With dead ends: 25 [2019-10-14 23:17:39,644 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:17:39,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:17:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-14 23:17:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-14 23:17:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-10-14 23:17:39,654 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-10-14 23:17:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:39,654 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-10-14 23:17:39,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-10-14 23:17:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-14 23:17:39,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:39,656 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:39,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:39,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-10-14 23:17:39,863 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:39,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867912373] [2019-10-14 23:17:39,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:39,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:39,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:39,871 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:39,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126901574] [2019-10-14 23:17:39,871 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 [2019-10-14 23:17:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:39,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-14 23:17:39,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:40,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867912373] [2019-10-14 23:17:40,008 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:40,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126901574] [2019-10-14 23:17:40,008 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:40,009 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-14 23:17:40,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080157342] [2019-10-14 23:17:40,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:17:40,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:40,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:17:40,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:40,011 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-10-14 23:17:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:40,150 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-10-14 23:17:40,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:17:40,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-14 23:17:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:40,152 INFO L225 Difference]: With dead ends: 32 [2019-10-14 23:17:40,152 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:17:40,153 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:17:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:17:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-14 23:17:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-14 23:17:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-10-14 23:17:40,167 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-10-14 23:17:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:40,168 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-10-14 23:17:40,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:17:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-10-14 23:17:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:17:40,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:40,171 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:40,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:40,375 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-10-14 23:17:40,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:40,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629649515] [2019-10-14 23:17:40,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:40,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:40,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:40,382 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:40,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429664507] [2019-10-14 23:17:40,382 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:40,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:17:40,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:17:40,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-14 23:17:40,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:17:40,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629649515] [2019-10-14 23:17:40,570 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:40,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429664507] [2019-10-14 23:17:40,571 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:40,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-10-14 23:17:40,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121303974] [2019-10-14 23:17:40,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:17:40,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:40,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:17:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:17:40,574 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2019-10-14 23:17:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:40,766 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-10-14 23:17:40,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:17:40,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-10-14 23:17:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:40,769 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:17:40,769 INFO L226 Difference]: Without dead ends: 36 [2019-10-14 23:17:40,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:17:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-14 23:17:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-14 23:17:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-14 23:17:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-10-14 23:17:40,778 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-10-14 23:17:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:40,778 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-10-14 23:17:40,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:17:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-10-14 23:17:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:17:40,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:40,780 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:40,983 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:40,984 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-10-14 23:17:40,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:40,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571691992] [2019-10-14 23:17:40,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:40,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:40,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:40,991 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:40,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885062098] [2019-10-14 23:17:40,992 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:41,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-14 23:17:41,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:17:41,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:17:41,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:41,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:17:41,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571691992] [2019-10-14 23:17:41,215 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:41,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885062098] [2019-10-14 23:17:41,215 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:41,215 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-14 23:17:41,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869420861] [2019-10-14 23:17:41,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:17:41,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:17:41,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:41,219 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 7 states. [2019-10-14 23:17:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:41,310 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-10-14 23:17:41,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:41,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-10-14 23:17:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:41,311 INFO L225 Difference]: With dead ends: 36 [2019-10-14 23:17:41,312 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:41,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:41,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-10-14 23:17:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:41,313 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:41,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:17:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:41,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:41,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:41,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:41,638 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:17:41,638 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:41,638 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:41,639 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:17:41,639 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:41,639 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:41,639 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-10-14 23:17:41,639 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-10-14 23:17:41,639 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-10-14 23:17:41,640 INFO L439 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (= (* 6 main_~x~0) (+ (* (* main_~y~0 3) main_~y~0) main_~y~0 (* (* (* main_~y~0 2) main_~y~0) main_~y~0))) [2019-10-14 23:17:41,640 INFO L443 ceAbstractionStarter]: For program point L21-1(lines 20 29) no Hoare annotation was computed. [2019-10-14 23:17:41,640 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 29) the Hoare annotation is: (= (* 6 main_~x~0) (+ (* (* main_~y~0 3) main_~y~0) main_~y~0 (* (* (* main_~y~0 2) main_~y~0) main_~y~0))) [2019-10-14 23:17:41,640 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 29) the Hoare annotation is: (= (* 6 main_~x~0) (+ (* (* main_~y~0 3) main_~y~0) main_~y~0 (* (* (* main_~y~0 2) main_~y~0) main_~y~0))) [2019-10-14 23:17:41,640 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-10-14 23:17:41,641 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 10) the Hoare annotation is: true [2019-10-14 23:17:41,641 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-14 23:17:41,641 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 10) no Hoare annotation was computed. [2019-10-14 23:17:41,641 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-10-14 23:17:41,641 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-10-14 23:17:41,641 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 10) no Hoare annotation was computed. [2019-10-14 23:17:41,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:41 BoogieIcfgContainer [2019-10-14 23:17:41,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:41,659 INFO L168 Benchmark]: Toolchain (without parser) took 3270.22 ms. Allocated memory was 139.5 MB in the beginning and 232.8 MB in the end (delta: 93.3 MB). Free memory was 105.0 MB in the beginning and 160.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,660 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.25 ms. Allocated memory is still 139.5 MB. Free memory was 104.8 MB in the beginning and 95.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,662 INFO L168 Benchmark]: Boogie Preprocessor took 110.76 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 95.3 MB in the beginning and 181.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,663 INFO L168 Benchmark]: RCFGBuilder took 200.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,664 INFO L168 Benchmark]: TraceAbstraction took 2746.88 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 160.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:41,668 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 207.25 ms. Allocated memory is still 139.5 MB. Free memory was 104.8 MB in the beginning and 95.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.76 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 95.3 MB in the beginning and 181.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 200.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 170.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2746.88 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 160.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 20]: Loop Invariant Derived loop invariant: 6 * x == y * 3 * y + y + y * 2 * y * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 72 SDtfs, 40 SDslu, 203 SDs, 0 SdLazy, 160 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 59 HoareAnnotationTreeSize, 17 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 6779 SizeOfPredicates, 12 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 39/52 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...