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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 21:09:42,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 21:09:42,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 21:09:42,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 21:09:42,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 21:09:42,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 21:09:42,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 21:09:42,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 21:09:42,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 21:09:42,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 21:09:42,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 21:09:42,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 21:09:42,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 21:09:42,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 21:09:42,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 21:09:42,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 21:09:42,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 21:09:42,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 21:09:42,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 21:09:42,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 21:09:42,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 21:09:42,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 21:09:42,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 21:09:42,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 21:09:42,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 21:09:42,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 21:09:42,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 21:09:42,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 21:09:42,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 21:09:42,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 21:09:42,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 21:09:42,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 21:09:42,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 21:09:42,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 21:09:42,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 21:09:42,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 21:09:42,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 21:09:42,078 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 21:09:42,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 21:09:42,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 21:09:42,079 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 21:09:42,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 21:09:42,080 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 21:09:42,080 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 21:09:42,080 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 21:09:42,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 21:09:42,081 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 21:09:42,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 21:09:42,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 21:09:42,083 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 21:09:42,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 21:09:42,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 21:09:42,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 21:09:42,084 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 21:09:42,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 21:09:42,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 21:09:42,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 21:09:42,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 21:09:42,084 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 21:09:42,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 21:09:42,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 21:09:42,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 21:09:42,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 21:09:42,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 21:09:42,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 21:09:42,128 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 21:09:42,128 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 21:09:42,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat1.c [2019-09-03 21:09:42,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123e8ff1b/a3d8aa4508d74666add3735be0928dbb/FLAG6d59dd569 [2019-09-03 21:09:42,622 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 21:09:42,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1.c [2019-09-03 21:09:42,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123e8ff1b/a3d8aa4508d74666add3735be0928dbb/FLAG6d59dd569 [2019-09-03 21:09:43,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123e8ff1b/a3d8aa4508d74666add3735be0928dbb [2019-09-03 21:09:43,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 21:09:43,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 21:09:43,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 21:09:43,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 21:09:43,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 21:09:43,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df75dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43, skipping insertion in model container [2019-09-03 21:09:43,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 21:09:43,045 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 21:09:43,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:09:43,231 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 21:09:43,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 21:09:43,282 INFO L192 MainTranslator]: Completed translation [2019-09-03 21:09:43,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43 WrapperNode [2019-09-03 21:09:43,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 21:09:43,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 21:09:43,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 21:09:43,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 21:09:43,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (1/1) ... [2019-09-03 21:09:43,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 21:09:43,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 21:09:43,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 21:09:43,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 21:09:43,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (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 [2019-09-03 21:09:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 21:09:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 21:09:43,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 21:09:43,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 21:09:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 21:09:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-03 21:09:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 21:09:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 21:09:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 21:09:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 21:09:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 21:09:43,635 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 21:09:43,636 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-03 21:09:43,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:09:43 BoogieIcfgContainer [2019-09-03 21:09:43,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 21:09:43,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 21:09:43,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 21:09:43,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 21:09:43,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 09:09:43" (1/3) ... [2019-09-03 21:09:43,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2972d28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:09:43, skipping insertion in model container [2019-09-03 21:09:43,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 09:09:43" (2/3) ... [2019-09-03 21:09:43,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2972d28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 09:09:43, skipping insertion in model container [2019-09-03 21:09:43,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 09:09:43" (3/3) ... [2019-09-03 21:09:43,644 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat1.c [2019-09-03 21:09:43,653 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 21:09:43,660 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 21:09:43,675 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 21:09:43,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 21:09:43,701 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 21:09:43,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 21:09:43,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 21:09:43,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 21:09:43,702 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 21:09:43,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 21:09:43,702 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 21:09:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-03 21:09:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:09:43,726 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:09:43,727 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:09:43,729 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:09:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1029581307, now seen corresponding path program 1 times [2019-09-03 21:09:43,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:09:43,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:43,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:43,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:43,772 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:09:43,791 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:09:43,791 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:09:43,792 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 [2019-09-03 21:09:43,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:43,811 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:09:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:43,825 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:09:43,827 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:09:43,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:09:43,827 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:09:43,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:43,855 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:09:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:43,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-03 21:09:43,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:09:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:43,917 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:09:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:43,953 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:09:43,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-09-03 21:09:43,954 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:09:43,969 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 21:09:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 21:09:43,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:09:43,994 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-09-03 21:09:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:09:44,025 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-09-03 21:09:44,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 21:09:44,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 21:09:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:09:44,039 INFO L225 Difference]: With dead ends: 26 [2019-09-03 21:09:44,040 INFO L226 Difference]: Without dead ends: 21 [2019-09-03 21:09:44,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 21:09:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-03 21:09:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-03 21:09:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-03 21:09:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-09-03 21:09:44,092 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2019-09-03 21:09:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:09:44,093 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-09-03 21:09:44,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 21:09:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-09-03 21:09:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 21:09:44,094 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:09:44,094 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:09:44,095 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:09:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:44,095 INFO L82 PathProgramCache]: Analyzing trace with hash 989691158, now seen corresponding path program 1 times [2019-09-03 21:09:44,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:09:44,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:44,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:44,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:44,098 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:09:44,110 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:09:44,111 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:09:44,111 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 [2019-09-03 21:09:44,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:44,124 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:09:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:44,138 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-03 21:09:44,139 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-03 21:09:44,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:09:44,139 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:09:44,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:44,152 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:09:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:44,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 21:09:44,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:09:44,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:46,880 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:09:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:48,970 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-03 21:09:48,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-09-03 21:09:48,971 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 21:09:48,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 21:09:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 21:09:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2019-09-03 21:09:48,973 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 5 states. [2019-09-03 21:09:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:09:51,388 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-03 21:09:51,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 21:09:51,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-03 21:09:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:09:51,391 INFO L225 Difference]: With dead ends: 35 [2019-09-03 21:09:51,392 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 21:09:51,393 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2019-09-03 21:09:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 21:09:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-03 21:09:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-03 21:09:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-09-03 21:09:51,403 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 10 [2019-09-03 21:09:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:09:51,404 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-09-03 21:09:51,404 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 21:09:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-09-03 21:09:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 21:09:51,405 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:09:51,405 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:09:51,405 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:09:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:51,406 INFO L82 PathProgramCache]: Analyzing trace with hash -732641273, now seen corresponding path program 1 times [2019-09-03 21:09:51,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:09:51,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:51,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:51,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:51,408 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:09:51,410 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:09:51,410 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:09:51,410 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 [2019-09-03 21:09:51,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:51,427 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:09:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:51,438 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-03 21:09:51,440 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [17], [61], [64], [66], [69], [71], [72], [73], [74], [76], [77], [82] [2019-09-03 21:09:51,470 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:09:51,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:09:51,550 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:09:52,700 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:09:52,703 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 14. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 7 variables. [2019-09-03 21:09:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:52,713 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:09:52,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:09:52,714 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 21:09:52,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:52,737 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:09:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:52,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 21:09:52,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:09:52,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:52,938 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:09:53,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:53,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 21:09:53,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:09:53,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-03 21:09:53,075 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:09:53,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-03 21:09:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-03 21:09:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-03 21:09:53,077 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 13 states. [2019-09-03 21:09:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:09:55,676 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2019-09-03 21:09:55,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-03 21:09:55,676 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-09-03 21:09:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:09:55,680 INFO L225 Difference]: With dead ends: 53 [2019-09-03 21:09:55,680 INFO L226 Difference]: Without dead ends: 51 [2019-09-03 21:09:55,681 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-09-03 21:09:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-03 21:09:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2019-09-03 21:09:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-03 21:09:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-09-03 21:09:55,697 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 16 [2019-09-03 21:09:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:09:55,697 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-09-03 21:09:55,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-03 21:09:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2019-09-03 21:09:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-03 21:09:55,698 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 21:09:55,698 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 21:09:55,699 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 21:09:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:55,700 INFO L82 PathProgramCache]: Analyzing trace with hash 600656009, now seen corresponding path program 1 times [2019-09-03 21:09:55,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 21:09:55,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:55,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:55,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 21:09:55,701 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 21:09:55,703 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 21:09:55,703 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 21:09:55,704 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 21:09:55,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:55,725 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-03 21:09:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:55,737 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2019-09-03 21:09:55,738 INFO L207 CegarAbsIntRunner]: [0], [4], [13], [19], [28], [34], [61], [64], [66], [69], [71], [72], [73], [74], [76], [77], [78], [79] [2019-09-03 21:09:55,740 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 21:09:55,740 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 21:09:55,747 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-03 21:09:56,329 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-03 21:09:56,331 INFO L272 AbstractInterpreter]: Visited 18 different actions 68 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Performed 108 root evaluator evaluations with a maximum evaluation depth of 14. Performed 108 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-09-03 21:09:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 21:09:56,331 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-03 21:09:56,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 21:09:56,332 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 21:09:56,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 21:09:56,350 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-03 21:09:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 21:09:56,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-03 21:09:56,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 21:09:56,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 21:09:56,507 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-03 21:09:56,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:56,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 21:09:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 21:09:56,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 21:09:56,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2019-09-03 21:09:56,636 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-03 21:09:56,636 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-03 21:09:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-03 21:09:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-09-03 21:09:56,637 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 12 states. [2019-09-03 21:09:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 21:09:56,875 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-09-03 21:09:56,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-03 21:09:56,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-09-03 21:09:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 21:09:56,876 INFO L225 Difference]: With dead ends: 40 [2019-09-03 21:09:56,876 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 21:09:56,876 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-09-03 21:09:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 21:09:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 21:09:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 21:09:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 21:09:56,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-09-03 21:09:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 21:09:56,878 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 21:09:56,878 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-03 21:09:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 21:09:56,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 21:09:56,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 09:09:56 BoogieIcfgContainer [2019-09-03 21:09:56,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 21:09:56,886 INFO L168 Benchmark]: Toolchain (without parser) took 13873.22 ms. Allocated memory was 133.2 MB in the beginning and 347.1 MB in the end (delta: 213.9 MB). Free memory was 88.7 MB in the beginning and 252.6 MB in the end (delta: -163.9 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,886 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 133.2 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.66 ms. Allocated memory is still 133.2 MB. Free memory was 88.5 MB in the beginning and 78.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,888 INFO L168 Benchmark]: Boogie Preprocessor took 125.49 ms. Allocated memory was 133.2 MB in the beginning and 199.2 MB in the end (delta: 66.1 MB). Free memory was 78.7 MB in the beginning and 175.2 MB in the end (delta: -96.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,889 INFO L168 Benchmark]: RCFGBuilder took 228.59 ms. Allocated memory is still 199.2 MB. Free memory was 175.2 MB in the beginning and 162.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,890 INFO L168 Benchmark]: TraceAbstraction took 13244.99 ms. Allocated memory was 199.2 MB in the beginning and 347.1 MB in the end (delta: 147.8 MB). Free memory was 162.2 MB in the beginning and 252.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2019-09-03 21:09:56,894 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 133.2 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.66 ms. Allocated memory is still 133.2 MB. Free memory was 88.5 MB in the beginning and 78.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.49 ms. Allocated memory was 133.2 MB in the beginning and 199.2 MB in the end (delta: 66.1 MB). Free memory was 78.7 MB in the beginning and 175.2 MB in the end (delta: -96.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.59 ms. Allocated memory is still 199.2 MB. Free memory was 175.2 MB in the beginning and 162.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13244.99 ms. Allocated memory was 199.2 MB in the beginning and 347.1 MB in the end (delta: 147.8 MB). Free memory was 162.2 MB in the beginning and 252.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 13.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 5.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 85 SDslu, 204 SDs, 0 SdLazy, 281 SolverSat, 50 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.8s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 12 QuantifiedInterpolants, 15445 SizeOfPredicates, 17 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...