/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:11:59,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:11:59,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:12:00,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:12:00,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:12:00,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:12:00,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:12:00,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:12:00,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:12:00,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:12:00,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:12:00,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:12:00,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:12:00,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:12:00,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:12:00,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:12:00,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:12:00,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:12:00,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:12:00,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:12:00,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:12:00,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:12:00,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:12:00,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:12:00,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:12:00,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:12:00,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:12:00,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:12:00,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:12:00,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:12:00,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:12:00,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:12:00,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:12:00,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:12:00,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:12:00,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:12:00,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:12:00,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:12:00,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:12:00,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:12:00,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:12:00,114 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 [2020-10-13 11:12:00,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:12:00,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:12:00,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:12:00,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:12:00,150 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:12:00,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:12:00,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:12:00,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:12:00,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:12:00,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:12:00,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:12:00,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:12:00,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:12:00,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:12:00,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:12:00,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:12:00,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:12:00,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:12:00,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:12:00,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:12:00,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:12:00,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:12:00,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:12:00,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:12:00,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:12:00,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:12:00,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:12:00,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:12:00,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:12:00,155 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:12:00,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:12:00,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:12:00,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:12:00,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:12:00,488 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:12:00,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-13 11:12:00,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f76f788c/3f00b2a2161c409c8721ce6a4de00329/FLAG1ab4d72f8 [2020-10-13 11:12:01,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:12:01,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-13 11:12:01,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f76f788c/3f00b2a2161c409c8721ce6a4de00329/FLAG1ab4d72f8 [2020-10-13 11:12:01,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f76f788c/3f00b2a2161c409c8721ce6a4de00329 [2020-10-13 11:12:01,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:12:01,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:12:01,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:12:01,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:12:01,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:12:01,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32333996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01, skipping insertion in model container [2020-10-13 11:12:01,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:12:01,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:12:01,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:12:01,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:12:01,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:12:01,665 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:12:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01 WrapperNode [2020-10-13 11:12:01,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:12:01,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:12:01,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:12:01,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:12:01,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (1/1) ... [2020-10-13 11:12:01,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:12:01,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:12:01,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:12:01,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:12:01,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (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 [2020-10-13 11:12:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:12:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:12:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 11:12:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 11:12:01,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:12:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:12:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:12:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 11:12:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 11:12:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 11:12:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:12:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:12:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:12:02,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:12:02,023 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 11:12:02,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:12:02 BoogieIcfgContainer [2020-10-13 11:12:02,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:12:02,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:12:02,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:12:02,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:12:02,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:12:01" (1/3) ... [2020-10-13 11:12:02,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce5d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:12:02, skipping insertion in model container [2020-10-13 11:12:02,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:12:01" (2/3) ... [2020-10-13 11:12:02,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce5d879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:12:02, skipping insertion in model container [2020-10-13 11:12:02,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:12:02" (3/3) ... [2020-10-13 11:12:02,034 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-10-13 11:12:02,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:12:02,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:12:02,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:12:02,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:12:02,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:12:02,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:12:02,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:12:02,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:12:02,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:12:02,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:12:02,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:12:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-13 11:12:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 11:12:02,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:12:02,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:12:02,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:12:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:12:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-10-13 11:12:02,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:12:02,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185516693] [2020-10-13 11:12:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:12:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:12:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:12:02,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185516693] [2020-10-13 11:12:02,243 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-13 11:12:02,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:12:02,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-13 11:12:02,244 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-13 11:12:02,245 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 11:12:02,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:12:02,262 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 11:12:02,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:12:02 BoogieIcfgContainer [2020-10-13 11:12:02,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:12:02,266 INFO L168 Benchmark]: Toolchain (without parser) took 860.97 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 154.3 MB in the end (delta: -52.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:02,267 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 11:12:02,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:02,269 INFO L168 Benchmark]: Boogie Preprocessor took 100.62 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:02,270 INFO L168 Benchmark]: RCFGBuilder took 259.21 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 167.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:02,271 INFO L168 Benchmark]: TraceAbstraction took 235.41 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 154.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-13 11:12:02,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.62 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.21 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 167.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235.41 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 154.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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: [L20] int z, a, k; [L21] int x, y, c; [L22] z = __VERIFIER_nondet_int() [L23] a = __VERIFIER_nondet_int() [L24] k = __VERIFIER_nondet_int() [L26] x = a [L27] y = 1 [L28] c = 1 [L30] COND FALSE !(1) [L40] CALL __VERIFIER_assert(z*x - x + a - a*z*y == 0) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 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=20occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...