/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/bitvector/gcd_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:33:10,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:33:10,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:33:10,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:33:10,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:33:10,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:33:10,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:33:10,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:33:10,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:33:10,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:33:10,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:33:10,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:33:10,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:33:10,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:33:10,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:33:10,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:33:10,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:33:10,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:33:10,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:33:10,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:33:10,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:33:10,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:33:10,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:33:10,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:33:10,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:33:10,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:33:10,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:33:10,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:33:10,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:33:10,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:33:10,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:33:10,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:33:10,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:33:10,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:33:10,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:33:10,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:33:10,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:33:10,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:33:10,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:33:10,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:33:10,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:33:10,563 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 [2020-10-14 18:33:10,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:33:10,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:33:10,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:33:10,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:33:10,609 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:33:10,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:33:10,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:33:10,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:33:10,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:33:10,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:33:10,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:33:10,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:33:10,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:33:10,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:33:10,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:33:10,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:33:10,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:33:10,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:33:10,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:33:10,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:33:10,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:33:10,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:33:10,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:33:10,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:33:10,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:33:10,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:33:10,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:33:10,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:33:10,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:33:10,616 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:33:10,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:33:10,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:33:10,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:33:10,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:33:10,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:33:10,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-14 18:33:11,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/033d7e142/c8a6dc31af074d1f92d77a9628bfd973/FLAG14a99ced4 [2020-10-14 18:33:11,555 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:33:11,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-14 18:33:11,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/033d7e142/c8a6dc31af074d1f92d77a9628bfd973/FLAG14a99ced4 [2020-10-14 18:33:11,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/033d7e142/c8a6dc31af074d1f92d77a9628bfd973 [2020-10-14 18:33:11,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:33:11,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:33:11,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:33:11,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:33:11,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:33:11,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:33:11" (1/1) ... [2020-10-14 18:33:11,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:11, skipping insertion in model container [2020-10-14 18:33:11,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:33:11" (1/1) ... [2020-10-14 18:33:11,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:33:11,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:33:12,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:33:12,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:33:12,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:33:12,190 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:33:12,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12 WrapperNode [2020-10-14 18:33:12,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:33:12,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:33:12,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:33:12,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:33:12,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (1/1) ... [2020-10-14 18:33:12,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:33:12,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:33:12,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:33:12,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:33:12,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (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 [2020-10-14 18:33:12,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:33:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:33:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:33:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-10-14 18:33:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:33:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:33:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 18:33:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:33:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-10-14 18:33:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:33:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:33:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:33:12,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:33:12,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 18:33:12,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:33:12 BoogieIcfgContainer [2020-10-14 18:33:12,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:33:12,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:33:12,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:33:12,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:33:12,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:33:11" (1/3) ... [2020-10-14 18:33:12,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1976a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:33:12, skipping insertion in model container [2020-10-14 18:33:12,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:33:12" (2/3) ... [2020-10-14 18:33:12,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1976a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:33:12, skipping insertion in model container [2020-10-14 18:33:12,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:33:12" (3/3) ... [2020-10-14 18:33:12,750 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_3.c [2020-10-14 18:33:12,765 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:33:12,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:33:12,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:33:12,832 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:33:12,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:33:12,833 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:33:12,833 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:33:12,833 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:33:12,834 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:33:12,834 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:33:12,834 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:33:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 18:33:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 18:33:12,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:12,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:12,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash 578872383, now seen corresponding path program 1 times [2020-10-14 18:33:12,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:12,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286782388] [2020-10-14 18:33:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 18:33:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 18:33:13,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:13,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:33:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:33:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:33:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:33:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:13,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:33:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:13,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:13,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 18:33:13,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 18:33:13,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:13,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:33:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:33:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:33:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:33:13,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286782388] [2020-10-14 18:33:13,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:33:13,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 18:33:13,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128748700] [2020-10-14 18:33:13,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:33:13,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:13,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:33:13,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:33:13,786 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-10-14 18:33:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:13,965 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-10-14 18:33:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:33:13,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-14 18:33:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:13,979 INFO L225 Difference]: With dead ends: 59 [2020-10-14 18:33:13,979 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 18:33:13,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:33:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 18:33:14,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-14 18:33:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 18:33:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-14 18:33:14,028 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2020-10-14 18:33:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:14,029 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-14 18:33:14,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:33:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-14 18:33:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 18:33:14,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:14,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:14,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:33:14,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1106760965, now seen corresponding path program 1 times [2020-10-14 18:33:14,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:14,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657757309] [2020-10-14 18:33:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 18:33:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:33:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 18:33:14,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:14,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:33:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:33:14,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:33:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:33:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:14,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:14,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:14,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 18:33:14,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:14,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:14,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:14,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 18:33:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:14,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:14,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:14,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 18:33:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 18:33:14,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:14,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:33:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:33:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:33:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:33:14,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657757309] [2020-10-14 18:33:14,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:33:14,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:33:14,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719826733] [2020-10-14 18:33:14,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:33:14,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:14,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:33:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:33:14,465 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-14 18:33:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:14,510 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-14 18:33:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:33:14,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 18:33:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:14,512 INFO L225 Difference]: With dead ends: 33 [2020-10-14 18:33:14,512 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 18:33:14,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:33:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 18:33:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 18:33:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 18:33:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-14 18:33:14,519 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-10-14 18:33:14,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:14,520 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-14 18:33:14,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:33:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-14 18:33:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 18:33:14,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:14,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:33:14,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:33:14,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:14,522 INFO L82 PathProgramCache]: Analyzing trace with hash -41516072, now seen corresponding path program 1 times [2020-10-14 18:33:14,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:14,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32695648] [2020-10-14 18:33:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:14,532 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:33:14,533 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:33:14,533 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:33:14,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:33:14,556 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:33:14,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:33:14 BoogieIcfgContainer [2020-10-14 18:33:14,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:33:14,561 INFO L168 Benchmark]: Toolchain (without parser) took 2655.95 ms. Allocated memory was 148.4 MB in the beginning and 233.3 MB in the end (delta: 84.9 MB). Free memory was 104.8 MB in the beginning and 167.3 MB in the end (delta: -62.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,562 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.95 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 95.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,564 INFO L168 Benchmark]: Boogie Preprocessor took 132.80 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 95.0 MB in the beginning and 182.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,565 INFO L168 Benchmark]: RCFGBuilder took 413.74 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 170.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,566 INFO L168 Benchmark]: TraceAbstraction took 1816.71 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 170.0 MB in the beginning and 167.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:33:14,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.95 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 95.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.80 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 95.0 MB in the beginning and 182.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.74 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 170.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1816.71 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 170.0 MB in the beginning and 167.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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: [L28] signed char x = __VERIFIER_nondet_char(); [L29] signed char y = __VERIFIER_nondet_char(); [L30] signed char g; [L32] CALL, EXPR gcd_test(x, y) [L12] signed char t; [L14] COND FALSE !(a < (signed char)0) [L15] COND TRUE b < (signed char)0 [L15] b = -b [L17] COND TRUE b != (signed char)0 [L18] t = b [L19] b = a % b [L20] a = t [L17] COND FALSE !(b != (signed char)0) [L22] return a; [L32] RET, EXPR gcd_test(x, y) [L32] g = gcd_test(x, y) [L34] COND TRUE x > (signed char)0 [L35] CALL __VERIFIER_assert(x >= g) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 17 SDslu, 165 SDs, 0 SdLazy, 100 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...