/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=HIGHLEXORDER -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 [2020-08-18 19:38:57,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:38:57,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:38:57,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:38:57,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:38:57,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:38:57,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:38:57,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:38:57,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:38:57,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:38:57,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:38:57,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:38:57,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:38:57,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:38:57,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:38:57,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:38:57,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:38:57,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:38:57,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:38:57,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:38:57,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:38:57,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:38:57,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:38:57,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:38:57,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:38:57,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:38:57,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:38:57,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:38:57,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:38:57,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 19:38:57,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:38:57,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:38:57,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:38:57,944 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 [2020-08-18 19:38:57,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:38:57,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:38:57,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:38:57,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:38:57,995 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:38:57,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:38:57,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:38:57,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:38:57,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:38:57,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:38:57,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:38:57,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:38:57,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:38:57,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:38:57,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:38:57,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:38:57,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:38:57,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:38:57,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:38:58,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:38:58,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:38:58,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:38:58,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:38:58,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:38:58,002 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:38:58,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:38:58,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:38:58,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:38:58,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:38:58,319 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:38:58,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-18 19:38:58,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8da02c2d/0b8bb9f1a09b4d8799b886dfa07c43b1/FLAG8b5bb7856 [2020-08-18 19:38:58,787 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:38:58,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-18 19:38:58,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8da02c2d/0b8bb9f1a09b4d8799b886dfa07c43b1/FLAG8b5bb7856 [2020-08-18 19:38:59,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8da02c2d/0b8bb9f1a09b4d8799b886dfa07c43b1 [2020-08-18 19:38:59,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:38:59,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:38:59,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:59,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:38:59,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:38:59,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59, skipping insertion in model container [2020-08-18 19:38:59,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:38:59,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:38:59,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:59,409 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:38:59,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:59,440 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:38:59,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59 WrapperNode [2020-08-18 19:38:59,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:59,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:38:59,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:38:59,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:38:59,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (1/1) ... [2020-08-18 19:38:59,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:38:59,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:38:59,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:38:59,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:38:59,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (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 [2020-08-18 19:38:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:38:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:38:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:38:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 19:38:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:38:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:38:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:38:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:38:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:38:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 19:38:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:38:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:38:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:38:59,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:38:59,837 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 19:38:59,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:59 BoogieIcfgContainer [2020-08-18 19:38:59,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:38:59,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:38:59,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:38:59,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:38:59,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:38:59" (1/3) ... [2020-08-18 19:38:59,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6ae7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:59, skipping insertion in model container [2020-08-18 19:38:59,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:59" (2/3) ... [2020-08-18 19:38:59,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6ae7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:59, skipping insertion in model container [2020-08-18 19:38:59,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:59" (3/3) ... [2020-08-18 19:38:59,878 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-08-18 19:38:59,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:38:59,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:38:59,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:38:59,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:38:59,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:38:59,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:38:59,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:38:59,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:38:59,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:38:59,941 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:38:59,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:38:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-18 19:38:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 19:38:59,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:59,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:59,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-08-18 19:38:59,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:59,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961258775] [2020-08-18 19:38:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:39:00,058 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 19:39:00,059 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 19:39:00,059 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:39:00,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:39:00,077 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 19:39:00,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:39:00 BoogieIcfgContainer [2020-08-18 19:39:00,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:39:00,081 INFO L168 Benchmark]: Toolchain (without parser) took 894.42 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 157.4 MB in the end (delta: -53.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,082 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,084 INFO L168 Benchmark]: Boogie Preprocessor took 104.79 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,085 INFO L168 Benchmark]: RCFGBuilder took 298.64 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 168.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,086 INFO L168 Benchmark]: TraceAbstraction took 227.52 ms. Allocated memory is still 202.9 MB. Free memory was 167.9 MB in the beginning and 157.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:39:00,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.79 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 298.64 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 168.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227.52 ms. Allocated memory is still 202.9 MB. Free memory was 167.9 MB in the beginning and 157.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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...