/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/cohendiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:04:16,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:04:16,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:04:16,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:04:16,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:04:16,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:04:16,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:04:16,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:04:16,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:04:16,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:04:16,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:04:16,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:04:16,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:04:16,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:04:16,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:04:16,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:04:16,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:04:16,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:04:16,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:04:16,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:04:16,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:04:16,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:04:16,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:04:16,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:04:16,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:04:16,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:04:16,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:04:16,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:04:16,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:04:16,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:04:16,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:04:16,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:04:16,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:04:16,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:04:16,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:04:17,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:04:17,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:04:17,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:04:17,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:04:17,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:04:17,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:04:17,020 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:04:17,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:04:17,020 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:04:17,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:04:17,023 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:04:17,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:04:17,023 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:04:17,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:04:17,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:04:17,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:04:17,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:04:17,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:04:17,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:04:17,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:04:17,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:04:17,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:04:17,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:04:17,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:04:17,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:04:17,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:04:17,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:04:17,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:04:17,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:04:17,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:04:17,317 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:04:17,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-07 04:04:17,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619c8c0de/908c9cb475e5445f9b2378840a9d0b0a/FLAG45a7bec20 [2019-11-07 04:04:17,871 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:04:17,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-07 04:04:17,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619c8c0de/908c9cb475e5445f9b2378840a9d0b0a/FLAG45a7bec20 [2019-11-07 04:04:18,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619c8c0de/908c9cb475e5445f9b2378840a9d0b0a [2019-11-07 04:04:18,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:04:18,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:04:18,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:04:18,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:04:18,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:04:18,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18, skipping insertion in model container [2019-11-07 04:04:18,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,253 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:04:18,273 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:04:18,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:04:18,481 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:04:18,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:04:18,513 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:04:18,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18 WrapperNode [2019-11-07 04:04:18,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:04:18,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:04:18,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:04:18,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:04:18,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... [2019-11-07 04:04:18,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:04:18,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:04:18,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:04:18,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:04:18,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:04:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:04:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:04:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:04:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:04:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:04:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:04:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:04:18,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:04:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:04:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:04:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:04:18,907 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:04:18,908 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 04:04:18,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:18 BoogieIcfgContainer [2019-11-07 04:04:18,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:04:18,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:04:18,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:04:18,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:04:18,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:04:18" (1/3) ... [2019-11-07 04:04:18,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dadf91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:18, skipping insertion in model container [2019-11-07 04:04:18,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:18" (2/3) ... [2019-11-07 04:04:18,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dadf91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:18, skipping insertion in model container [2019-11-07 04:04:18,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:18" (3/3) ... [2019-11-07 04:04:18,918 INFO L109 eAbstractionObserver]: Analyzing ICFG cohendiv.c [2019-11-07 04:04:18,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:04:18,942 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:04:18,955 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:04:18,984 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:04:18,984 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:04:18,984 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:04:18,985 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:04:18,985 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:04:18,985 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:04:18,985 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:04:18,985 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:04:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-07 04:04:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:04:19,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:19,012 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:19,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:19,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:19,021 INFO L82 PathProgramCache]: Analyzing trace with hash 49584088, now seen corresponding path program 1 times [2019-11-07 04:04:19,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:19,031 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497021215] [2019-11-07 04:04:19,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:19,138 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497021215] [2019-11-07 04:04:19,139 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:19,139 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:04:19,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437372447] [2019-11-07 04:04:19,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:04:19,144 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:19,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:04:19,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:04:19,157 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-07 04:04:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:19,190 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2019-11-07 04:04:19,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:04:19,192 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 04:04:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:19,200 INFO L225 Difference]: With dead ends: 51 [2019-11-07 04:04:19,201 INFO L226 Difference]: Without dead ends: 24 [2019-11-07 04:04:19,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:04:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-07 04:04:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-07 04:04:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-07 04:04:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-07 04:04:19,253 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2019-11-07 04:04:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:19,254 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-07 04:04:19,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:04:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-07 04:04:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:04:19,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:19,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:19,255 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:19,256 INFO L82 PathProgramCache]: Analyzing trace with hash -12649311, now seen corresponding path program 1 times [2019-11-07 04:04:19,256 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:19,257 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313092707] [2019-11-07 04:04:19,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:19,269 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:19,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965378292] [2019-11-07 04:04:19,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:19,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:04:19,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:19,401 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:19,466 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313092707] [2019-11-07 04:04:19,467 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:19,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965378292] [2019-11-07 04:04:19,467 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:19,467 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 04:04:19,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085805884] [2019-11-07 04:04:19,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:04:19,470 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:04:19,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:04:19,471 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 8 states. [2019-11-07 04:04:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:19,644 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2019-11-07 04:04:19,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:04:19,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 04:04:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:19,647 INFO L225 Difference]: With dead ends: 35 [2019-11-07 04:04:19,647 INFO L226 Difference]: Without dead ends: 33 [2019-11-07 04:04:19,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:04:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-07 04:04:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-07 04:04:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-07 04:04:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-07 04:04:19,664 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 10 [2019-11-07 04:04:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:19,664 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-07 04:04:19,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:04:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-07 04:04:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 04:04:19,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:19,666 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:19,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:19,869 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:19,870 INFO L82 PathProgramCache]: Analyzing trace with hash 71526866, now seen corresponding path program 1 times [2019-11-07 04:04:19,871 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:19,871 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590436354] [2019-11-07 04:04:19,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:19,879 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:19,879 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390946404] [2019-11-07 04:04:19,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:19,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:04:19,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:19,976 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:04:20,029 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590436354] [2019-11-07 04:04:20,029 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:20,029 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390946404] [2019-11-07 04:04:20,029 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:20,029 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 04:04:20,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820185292] [2019-11-07 04:04:20,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:04:20,031 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:20,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:04:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:04:20,031 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 8 states. [2019-11-07 04:04:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:20,161 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-11-07 04:04:20,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:04:20,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-07 04:04:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:20,164 INFO L225 Difference]: With dead ends: 47 [2019-11-07 04:04:20,164 INFO L226 Difference]: Without dead ends: 44 [2019-11-07 04:04:20,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:04:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-07 04:04:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-07 04:04:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-07 04:04:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2019-11-07 04:04:20,180 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2019-11-07 04:04:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:20,181 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2019-11-07 04:04:20,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:04:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2019-11-07 04:04:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 04:04:20,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:20,184 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:20,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:20,388 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1963256918, now seen corresponding path program 1 times [2019-11-07 04:04:20,389 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:20,389 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401580310] [2019-11-07 04:04:20,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:20,410 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:20,411 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651629625] [2019-11-07 04:04:20,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 04:04:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:20,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 04:04:20,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:20,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:04:20,495 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:04:20,563 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401580310] [2019-11-07 04:04:20,564 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:20,564 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651629625] [2019-11-07 04:04:20,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:20,564 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-07 04:04:20,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194943915] [2019-11-07 04:04:20,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:04:20,566 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:20,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:04:20,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:04:20,566 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand 10 states. [2019-11-07 04:04:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:20,682 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-11-07 04:04:20,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:04:20,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2019-11-07 04:04:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:20,687 INFO L225 Difference]: With dead ends: 49 [2019-11-07 04:04:20,688 INFO L226 Difference]: Without dead ends: 47 [2019-11-07 04:04:20,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:04:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-07 04:04:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-07 04:04:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-07 04:04:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2019-11-07 04:04:20,709 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 32 [2019-11-07 04:04:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:20,712 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2019-11-07 04:04:20,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:04:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2019-11-07 04:04:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 04:04:20,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:20,714 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:20,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:20,927 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:20,928 INFO L82 PathProgramCache]: Analyzing trace with hash -363064690, now seen corresponding path program 1 times [2019-11-07 04:04:20,928 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:20,929 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129656773] [2019-11-07 04:04:20,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:20,936 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:20,937 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181971874] [2019-11-07 04:04:20,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 04:04:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:20,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:04:20,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:21,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 04:04:21,055 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 04:04:21,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129656773] [2019-11-07 04:04:21,129 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:21,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181971874] [2019-11-07 04:04:21,129 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:04:21,129 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2019-11-07 04:04:21,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991108430] [2019-11-07 04:04:21,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:04:21,130 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:21,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:04:21,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:04:21,131 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 11 states. [2019-11-07 04:04:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:21,334 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2019-11-07 04:04:21,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:04:21,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2019-11-07 04:04:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:21,336 INFO L225 Difference]: With dead ends: 73 [2019-11-07 04:04:21,336 INFO L226 Difference]: Without dead ends: 71 [2019-11-07 04:04:21,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-11-07 04:04:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-07 04:04:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2019-11-07 04:04:21,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-07 04:04:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2019-11-07 04:04:21,350 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 38 [2019-11-07 04:04:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:21,350 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2019-11-07 04:04:21,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:04:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2019-11-07 04:04:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 04:04:21,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:04:21,352 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:04:21,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:21,562 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:04:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:04:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1044881029, now seen corresponding path program 1 times [2019-11-07 04:04:21,564 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:04:21,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973311682] [2019-11-07 04:04:21,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:04:21,575 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 04:04:21,576 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117521824] [2019-11-07 04:04:21,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:04:21,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 04:04:21,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:04:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 04:04:21,720 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:04:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 04:04:21,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973311682] [2019-11-07 04:04:21,810 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 04:04:21,811 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117521824] [2019-11-07 04:04:21,812 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:04:21,812 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2019-11-07 04:04:21,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288770445] [2019-11-07 04:04:21,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:04:21,813 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:04:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:04:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:04:21,814 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 6 states. [2019-11-07 04:04:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:04:21,958 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2019-11-07 04:04:21,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:04:21,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2019-11-07 04:04:21,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:04:21,959 INFO L225 Difference]: With dead ends: 51 [2019-11-07 04:04:21,959 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:04:21,960 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:04:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:04:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:04:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:04:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:04:21,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2019-11-07 04:04:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:04:21,963 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:04:21,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:04:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:04:21,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:04:22,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:04:22,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:04:22,764 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:04:22,764 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:04:22,764 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:04:22,765 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:04:22,765 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:04:22,765 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:04:22,765 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,765 INFO L439 ceAbstractionStarter]: At program point L31-1(line 31) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,765 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 58) no Hoare annotation was computed. [2019-11-07 04:04:22,766 INFO L443 ceAbstractionStarter]: For program point L56(line 56) no Hoare annotation was computed. [2019-11-07 04:04:22,766 INFO L443 ceAbstractionStarter]: For program point L42(lines 39 51) no Hoare annotation was computed. [2019-11-07 04:04:22,766 INFO L439 ceAbstractionStarter]: At program point L40(line 40) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (<= 1 main_~r~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,766 INFO L439 ceAbstractionStarter]: At program point L40-1(line 40) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (<= 1 main_~r~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,766 INFO L443 ceAbstractionStarter]: For program point L32(lines 30 54) no Hoare annotation was computed. [2019-11-07 04:04:22,766 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 58) the Hoare annotation is: true [2019-11-07 04:04:22,767 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 54) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,767 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 54) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,767 INFO L439 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= main_~x~0 (+ (* main_~q~0 main_~y~0) main_~r~0)) (<= 1 main_~y~0) (<= 1 main_~r~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0)) (<= (* (* main_~y~0 2) main_~a~0) main_~r~0)) [2019-11-07 04:04:22,767 INFO L443 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2019-11-07 04:04:22,767 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (<= 1 main_~r~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,768 INFO L439 ceAbstractionStarter]: At program point L39-2(lines 39 51) the Hoare annotation is: (and (= (* main_~y~0 main_~a~0) main_~b~0) (<= 1 main_~y~0) (<= 1 main_~r~0) (= (+ (* (+ main_~q~0 main_~a~0) main_~y~0) main_~r~0) (+ main_~x~0 main_~b~0))) [2019-11-07 04:04:22,768 INFO L443 ceAbstractionStarter]: For program point L39-3(lines 39 51) no Hoare annotation was computed. [2019-11-07 04:04:22,768 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-07 04:04:22,768 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-11-07 04:04:22,768 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-07 04:04:22,768 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-07 04:04:22,768 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-11-07 04:04:22,769 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-11-07 04:04:22,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:04:22 BoogieIcfgContainer [2019-11-07 04:04:22,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:04:22,786 INFO L168 Benchmark]: Toolchain (without parser) took 4550.47 ms. Allocated memory was 143.7 MB in the beginning and 246.4 MB in the end (delta: 102.8 MB). Free memory was 102.9 MB in the beginning and 152.6 MB in the end (delta: -49.7 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,787 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.02 ms. Allocated memory is still 143.7 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,789 INFO L168 Benchmark]: Boogie Preprocessor took 119.05 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 93.0 MB in the beginning and 181.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,789 INFO L168 Benchmark]: RCFGBuilder took 276.38 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 167.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,790 INFO L168 Benchmark]: TraceAbstraction took 3872.33 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 166.6 MB in the beginning and 152.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:04:22,794 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.02 ms. Allocated memory is still 143.7 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.05 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 93.0 MB in the beginning and 181.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 276.38 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 167.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3872.33 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 166.6 MB in the beginning and 152.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (y * a == b && 1 <= y) && (q + a) * y + r == x + b - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((y * a == b && 1 <= y) && 1 <= r) && (q + a) * y + r == x + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 7, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, HoareTripleCheckerStatistics: 164 SDtfs, 90 SDslu, 537 SDs, 0 SdLazy, 339 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 238 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 34 PreInvPairs, 52 NumberOfFragments, 218 HoareAnnotationTreeSize, 34 FomulaSimplifications, 550 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 439 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 28545 SizeOfPredicates, 16 NumberOfNonLiveVariables, 354 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 315/318 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...