/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:32:18,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:32:18,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:32:18,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:32:18,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:32:18,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:32:18,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:32:18,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:32:18,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:32:18,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:32:18,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:32:18,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:32:18,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:32:18,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:32:18,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:32:18,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:32:18,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:32:18,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:32:18,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:32:18,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:32:18,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:32:18,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:32:18,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:32:18,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:32:18,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:32:18,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:32:18,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:32:18,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:32:18,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:32:18,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:32:18,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:32:18,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:32:18,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:32:18,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:32:18,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:32:18,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:32:18,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:32:18,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:32:18,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:32:18,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:32:18,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:32:18,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:32:18,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:32:18,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:32:18,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:32:18,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:32:18,167 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:32:18,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:32:18,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:32:18,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:32:18,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:32:18,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:32:18,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:32:18,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:32:18,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:32:18,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:32:18,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:32:18,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:32:18,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:32:18,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:32:18,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:32:18,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:32:18,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:32:18,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:32:18,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:32:18,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:32:18,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:32:18,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:32:18,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:32:18,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:32:18,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:32:18,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:32:18,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:32:18,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:32:18,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:32:18,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:32:18,504 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:32:18,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-19 04:32:18,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418c58f4a/ed1257a2ada54574a4845846c2904c97/FLAG9e57e48c0 [2020-08-19 04:32:19,031 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:32:19,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-19 04:32:19,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418c58f4a/ed1257a2ada54574a4845846c2904c97/FLAG9e57e48c0 [2020-08-19 04:32:19,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/418c58f4a/ed1257a2ada54574a4845846c2904c97 [2020-08-19 04:32:19,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:32:19,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:32:19,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:32:19,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:32:19,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:32:19,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1573d552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19, skipping insertion in model container [2020-08-19 04:32:19,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:32:19,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:32:19,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:32:19,613 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:32:19,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:32:19,645 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:32:19,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19 WrapperNode [2020-08-19 04:32:19,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:32:19,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:32:19,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:32:19,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:32:19,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... [2020-08-19 04:32:19,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:32:19,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:32:19,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:32:19,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:32:19,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 04:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 04:32:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:32:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:32:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:32:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:32:20,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:32:20,014 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:32:20,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:32:20 BoogieIcfgContainer [2020-08-19 04:32:20,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:32:20,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:32:20,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:32:20,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:32:20,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:32:19" (1/3) ... [2020-08-19 04:32:20,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:32:20, skipping insertion in model container [2020-08-19 04:32:20,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:19" (2/3) ... [2020-08-19 04:32:20,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:32:20, skipping insertion in model container [2020-08-19 04:32:20,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:32:20" (3/3) ... [2020-08-19 04:32:20,025 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-08-19 04:32:20,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:32:20,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:32:20,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:32:20,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:32:20,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:32:20,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:32:20,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:32:20,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:32:20,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:32:20,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:32:20,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:32:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-19 04:32:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 04:32:20,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:32:20,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:32:20,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:32:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:32:20,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-08-19 04:32:20,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:32:20,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167067751] [2020-08-19 04:32:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:32:20,209 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 04:32:20,210 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 04:32:20,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:32:20,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:32:20,226 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 04:32:20,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:32:20 BoogieIcfgContainer [2020-08-19 04:32:20,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:32:20,229 INFO L168 Benchmark]: Toolchain (without parser) took 827.56 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.4 MB in the beginning and 159.5 MB in the end (delta: -55.1 MB). Peak memory consumption was 953.4 kB. Max. memory is 7.1 GB. [2020-08-19 04:32:20,230 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:32:20,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.08 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:20,232 INFO L168 Benchmark]: Boogie Preprocessor took 113.12 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.6 MB in the beginning and 184.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:20,233 INFO L168 Benchmark]: RCFGBuilder took 255.62 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 171.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:20,234 INFO L168 Benchmark]: TraceAbstraction took 207.76 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 159.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:20,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.08 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.12 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.6 MB in the beginning and 184.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.62 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 171.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207.76 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 159.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int z, k; [L22] int x, y, c; [L23] z = __VERIFIER_nondet_int() [L24] k = __VERIFIER_nondet_int() [L26] x = 1 [L27] y = z [L28] c = 1 [L30] COND TRUE 1 [L31] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L14] COND TRUE !(cond) [L16] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...