/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/ps3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:48,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:48,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:48,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:36:48,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:36:48,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:36:48,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:36:48,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:36:48,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:36:48,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:36:48,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:36:48,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:36:48,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:48,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:48,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:48,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:48,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:48,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:48,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:48,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:48,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:48,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:48,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:48,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:48,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:36:48,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:36:48,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:36:48,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:36:48,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:36:48,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:36:48,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:36:48,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:36:48,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:36:48,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:36:48,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:36:48,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:36:48,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:36:48,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:36:48,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:48,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:48,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:48,954 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 00:36:48,988 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:48,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:48,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:48,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:48,993 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:48,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:48,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:48,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:48,997 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:48,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:48,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:48,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:48,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:48,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:48,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:48,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:48,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:48,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:48,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:48,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:48,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:49,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:49,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:49,001 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 00:36:49,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:49,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:49,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:49,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:49,349 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:49,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps3.c [2019-11-07 00:36:49,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124c66944/436487aae375441fa8817de17ad78033/FLAG15f74269e [2019-11-07 00:36:49,810 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:49,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps3.c [2019-11-07 00:36:49,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124c66944/436487aae375441fa8817de17ad78033/FLAG15f74269e [2019-11-07 00:36:50,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124c66944/436487aae375441fa8817de17ad78033 [2019-11-07 00:36:50,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:50,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:50,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:50,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:50,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bcaca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50, skipping insertion in model container [2019-11-07 00:36:50,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,272 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:50,290 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:50,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:50,504 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:50,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:50,545 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:50,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50 WrapperNode [2019-11-07 00:36:50,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:50,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:50,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:50,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:50,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (1/1) ... [2019-11-07 00:36:50,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:50,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:50,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:50,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:50,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (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 00:36:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:50,947 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:50,947 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:36:50,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:50 BoogieIcfgContainer [2019-11-07 00:36:50,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:50,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:50,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:50,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:50,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:50" (1/3) ... [2019-11-07 00:36:50,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6a210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:50, skipping insertion in model container [2019-11-07 00:36:50,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:50" (2/3) ... [2019-11-07 00:36:50,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6a210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:50, skipping insertion in model container [2019-11-07 00:36:50,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:50" (3/3) ... [2019-11-07 00:36:50,957 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2019-11-07 00:36:50,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:50,973 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:50,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:51,007 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:51,007 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:51,007 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:51,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:51,007 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:51,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:51,008 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:51,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:36:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:51,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:51,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:51,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-11-07 00:36:51,041 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:51,041 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620963620] [2019-11-07 00:36:51,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:51,131 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 00:36:51,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620963620] [2019-11-07 00:36:51,133 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:51,133 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:36:51,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829189933] [2019-11-07 00:36:51,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:51,139 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:51,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:51,152 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 00:36:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:51,171 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-07 00:36:51,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:51,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:51,180 INFO L225 Difference]: With dead ends: 35 [2019-11-07 00:36:51,180 INFO L226 Difference]: Without dead ends: 15 [2019-11-07 00:36:51,184 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 00:36:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-07 00:36:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-07 00:36:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 00:36:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-07 00:36:51,218 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-11-07 00:36:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:51,219 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-07 00:36:51,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-07 00:36:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:51,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:51,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:51,221 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-11-07 00:36:51,222 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:51,222 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942067466] [2019-11-07 00:36:51,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:51,229 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:51,229 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822279377] [2019-11-07 00:36:51,230 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 00:36:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:51,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:36:51,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:51,500 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 00:36:51,500 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:51,653 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 00:36:51,654 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942067466] [2019-11-07 00:36:51,654 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:51,654 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822279377] [2019-11-07 00:36:51,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:51,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 00:36:51,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807353964] [2019-11-07 00:36:51,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:51,658 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:51,659 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-11-07 00:36:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:51,815 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-07 00:36:51,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:51,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 00:36:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:51,816 INFO L225 Difference]: With dead ends: 19 [2019-11-07 00:36:51,817 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:51,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:51,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-07 00:36:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:51,820 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:51,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:51,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:52,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:52,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:52,186 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:52,186 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:52,186 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:52,186 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:52,187 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:52,187 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:52,187 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-11-07 00:36:52,187 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-11-07 00:36:52,188 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-11-07 00:36:52,188 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))) [2019-11-07 00:36:52,188 INFO L443 ceAbstractionStarter]: For program point L21-1(lines 20 29) no Hoare annotation was computed. [2019-11-07 00:36:52,188 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))) [2019-11-07 00:36:52,189 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))) [2019-11-07 00:36:52,189 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-11-07 00:36:52,189 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 10) the Hoare annotation is: true [2019-11-07 00:36:52,189 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 10) no Hoare annotation was computed. [2019-11-07 00:36:52,190 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-11-07 00:36:52,190 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-11-07 00:36:52,190 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-07 00:36:52,190 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 10) no Hoare annotation was computed. [2019-11-07 00:36:52,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:52 BoogieIcfgContainer [2019-11-07 00:36:52,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:52,209 INFO L168 Benchmark]: Toolchain (without parser) took 1952.89 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 104.5 MB in the beginning and 129.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,210 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 140.0 MB. Free memory was 104.3 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,212 INFO L168 Benchmark]: Boogie Preprocessor took 158.28 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 94.9 MB in the beginning and 185.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,213 INFO L168 Benchmark]: RCFGBuilder took 243.31 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 173.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,214 INFO L168 Benchmark]: TraceAbstraction took 1256.44 ms. Allocated memory is still 206.6 MB. Free memory was 173.3 MB in the beginning and 129.0 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:52,219 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.41 ms. Allocated memory is still 140.0 MB. Free memory was 104.3 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.28 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 94.9 MB in the beginning and 185.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 243.31 ms. Allocated memory is still 206.6 MB. Free memory was 185.0 MB in the beginning and 173.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1256.44 ms. Allocated memory is still 206.6 MB. Free memory was 173.3 MB in the beginning and 129.0 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, 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, 0.3s 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, 59 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 SizeOfPredicates, 2 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 10 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...