java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/ps6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:48:40,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:48:40,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:48:40,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:48:40,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:48:40,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:48:40,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:48:40,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:48:40,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:48:40,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:48:40,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:48:40,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:48:40,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:48:40,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:48:40,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:48:40,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:48:40,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:48:40,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:48:40,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:48:40,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:48:40,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:48:40,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:48:40,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:48:40,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:48:40,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:48:40,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:48:40,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:48:40,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:48:40,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:48:40,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:48:40,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:48:40,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:48:40,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:48:40,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:48:40,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:48:40,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:48:40,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:48:40,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:48:40,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:48:40,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:48:40,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:48:40,803 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 [2019-10-07 13:48:40,834 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:48:40,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:48:40,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:48:40,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:48:40,839 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:48:40,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:48:40,839 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:48:40,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:48:40,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:48:40,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:48:40,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:48:40,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:48:40,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:48:40,843 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:48:40,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:48:40,844 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:48:40,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:48:40,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:48:40,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:48:40,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:48:40,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:48:40,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:48:40,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:48:40,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:48:40,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:48:40,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:48:40,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:48:40,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:48:40,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:48:41,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:48:41,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:48:41,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:48:41,138 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:48:41,138 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:48:41,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps6.c [2019-10-07 13:48:41,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4220b0a64/1e762794484c47eb80154f870412a6e9/FLAG85327f008 [2019-10-07 13:48:41,645 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:48:41,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps6.c [2019-10-07 13:48:41,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4220b0a64/1e762794484c47eb80154f870412a6e9/FLAG85327f008 [2019-10-07 13:48:42,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4220b0a64/1e762794484c47eb80154f870412a6e9 [2019-10-07 13:48:42,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:48:42,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:48:42,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:42,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:48:42,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:48:42,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a7327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42, skipping insertion in model container [2019-10-07 13:48:42,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,067 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:48:42,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:48:42,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:42,327 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:48:42,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:48:42,383 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:48:42,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42 WrapperNode [2019-10-07 13:48:42,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:48:42,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:48:42,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:48:42,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:48:42,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (1/1) ... [2019-10-07 13:48:42,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:48:42,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:48:42,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:48:42,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:48:42,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (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 [2019-10-07 13:48:42,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:48:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:48:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:48:42,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:48:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:48:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:48:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:48:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:48:42,814 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:48:42,814 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:48:42,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:42 BoogieIcfgContainer [2019-10-07 13:48:42,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:48:42,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:48:42,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:48:42,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:48:42,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:48:42" (1/3) ... [2019-10-07 13:48:42,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430b4144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:42, skipping insertion in model container [2019-10-07 13:48:42,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:48:42" (2/3) ... [2019-10-07 13:48:42,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430b4144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:48:42, skipping insertion in model container [2019-10-07 13:48:42,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:48:42" (3/3) ... [2019-10-07 13:48:42,844 INFO L109 eAbstractionObserver]: Analyzing ICFG ps6.c [2019-10-07 13:48:42,861 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:48:42,870 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:48:42,902 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:48:42,939 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:48:42,939 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:48:42,940 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:48:42,940 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:48:42,940 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:48:42,940 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:48:42,940 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:48:42,940 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:48:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-07 13:48:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:42,960 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:42,961 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:42,962 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash -122887910, now seen corresponding path program 1 times [2019-10-07 13:48:42,974 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:42,974 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:42,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:42,975 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:48:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:48:43,076 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:43,077 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:48:43,077 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:48:43,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:48:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:48:43,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:48:43,096 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-07 13:48:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:48:43,117 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-07 13:48:43,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:48:43,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-07 13:48:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:48:43,125 INFO L225 Difference]: With dead ends: 35 [2019-10-07 13:48:43,126 INFO L226 Difference]: Without dead ends: 16 [2019-10-07 13:48:43,129 INFO L606 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 [2019-10-07 13:48:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-07 13:48:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-07 13:48:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-07 13:48:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-07 13:48:43,163 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-07 13:48:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:48:43,164 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-07 13:48:43,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:48:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-07 13:48:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:48:43,166 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:48:43,166 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:48:43,166 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:48:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:48:43,167 INFO L82 PathProgramCache]: Analyzing trace with hash -156194248, now seen corresponding path program 1 times [2019-10-07 13:48:43,167 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:48:43,168 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:48:43,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:43,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:48:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:48:43,175 ERROR L261 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-07 13:48:43,176 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Benchmark is only available after the trace check is finished. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.getStatistics(InterpolatingTraceCheck.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.aggregateStatistics(IpTcStrategyModuleTraceCheck.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 13:48:43,182 INFO L168 Benchmark]: Toolchain (without parser) took 1129.77 ms. Allocated memory was 145.2 MB in the beginning and 205.5 MB in the end (delta: 60.3 MB). Free memory was 101.8 MB in the beginning and 152.5 MB in the end (delta: -50.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,183 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.50 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,185 INFO L168 Benchmark]: Boogie Preprocessor took 171.02 ms. Allocated memory was 145.2 MB in the beginning and 205.5 MB in the end (delta: 60.3 MB). Free memory was 91.8 MB in the beginning and 183.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,186 INFO L168 Benchmark]: RCFGBuilder took 259.93 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 172.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,187 INFO L168 Benchmark]: TraceAbstraction took 361.76 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 152.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:48:43,191 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.50 ms. Allocated memory is still 145.2 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.02 ms. Allocated memory was 145.2 MB in the beginning and 205.5 MB in the end (delta: 60.3 MB). Free memory was 91.8 MB in the beginning and 183.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.93 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 172.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 361.76 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 152.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Benchmark is only available after the trace check is finished. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Benchmark is only available after the trace check is finished.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...