/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:31:33,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:31:33,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:31:33,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:31:33,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:31:33,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:31:33,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:31:33,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:31:33,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:31:33,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:31:33,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:31:33,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:31:33,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:31:33,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:31:33,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:31:33,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:31:33,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:31:33,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:31:33,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:31:33,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:31:33,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:31:33,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:31:33,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:31:33,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:31:33,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:31:33,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:31:33,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:31:33,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:31:33,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:31:33,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:31:33,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:31:33,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:31:33,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:31:33,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:31:33,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:31:33,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:31:33,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:31:33,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:31:33,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:31:33,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:31:33,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:31:33,745 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 [2020-09-24 18:31:33,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:31:33,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:31:33,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:31:33,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:31:33,799 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:31:33,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:31:33,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:31:33,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:31:33,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:31:33,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:31:33,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:31:33,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:31:33,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:31:33,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:31:33,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:31:33,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:31:33,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:31:33,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:31:33,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:31:33,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:31:33,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:31:33,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:31:33,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:31:33,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:31:33,806 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:31:34,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:31:34,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:31:34,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:31:34,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:31:34,253 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:31:34,254 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2020-09-24 18:31:34,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe9d1589e/f2cb8c6fe6774fb7b7e4f697a7a9830b/FLAG78a6b64e7 [2020-09-24 18:31:34,895 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:31:34,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/fermat2.c [2020-09-24 18:31:34,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe9d1589e/f2cb8c6fe6774fb7b7e4f697a7a9830b/FLAG78a6b64e7 [2020-09-24 18:31:35,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe9d1589e/f2cb8c6fe6774fb7b7e4f697a7a9830b [2020-09-24 18:31:35,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:31:35,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:31:35,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:35,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:31:35,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:31:35,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683cf205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35, skipping insertion in model container [2020-09-24 18:31:35,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:31:35,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:31:35,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:35,564 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:31:35,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:31:35,606 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:31:35,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35 WrapperNode [2020-09-24 18:31:35,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:31:35,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:31:35,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:31:35,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:31:35,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (1/1) ... [2020-09-24 18:31:35,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:31:35,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:31:35,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:31:35,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:31:35,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (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 [2020-09-24 18:31:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:31:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:31:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:31:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:31:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:31:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:31:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 18:31:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:31:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:31:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:31:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:31:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:31:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:31:36,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:31:36,092 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:31:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:36 BoogieIcfgContainer [2020-09-24 18:31:36,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:31:36,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:31:36,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:31:36,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:31:36,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:31:35" (1/3) ... [2020-09-24 18:31:36,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7aecbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:36, skipping insertion in model container [2020-09-24 18:31:36,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:31:35" (2/3) ... [2020-09-24 18:31:36,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7aecbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:31:36, skipping insertion in model container [2020-09-24 18:31:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:31:36" (3/3) ... [2020-09-24 18:31:36,125 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2020-09-24 18:31:36,144 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:31:36,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:31:36,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:31:36,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:31:36,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:31:36,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:31:36,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:31:36,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:31:36,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:31:36,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:31:36,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:31:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 18:31:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:31:36,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:31:36,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:31:36,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:31:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:31:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 175655853, now seen corresponding path program 1 times [2020-09-24 18:31:36,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:31:36,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817732738] [2020-09-24 18:31:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:31:36,350 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 18:31:36,351 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 18:31:36,351 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:31:36,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:31:36,372 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 18:31:36,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:31:36 BoogieIcfgContainer [2020-09-24 18:31:36,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:31:36,376 INFO L168 Benchmark]: Toolchain (without parser) took 1128.94 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 157.3 MB in the end (delta: -54.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,378 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.14 ms. Allocated memory is still 141.0 MB. Free memory was 102.4 MB in the beginning and 92.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,381 INFO L168 Benchmark]: Boogie Preprocessor took 120.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 183.5 MB in the end (delta: -91.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,382 INFO L168 Benchmark]: RCFGBuilder took 375.96 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 168.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,383 INFO L168 Benchmark]: TraceAbstraction took 264.01 ms. Allocated memory is still 204.5 MB. Free memory was 168.2 MB in the beginning and 157.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:31:36,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.14 ms. Allocated memory is still 141.0 MB. Free memory was 102.4 MB in the beginning and 92.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 183.5 MB in the end (delta: -91.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.96 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 168.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264.01 ms. Allocated memory is still 204.5 MB. Free memory was 168.2 MB in the beginning and 157.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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, overapproximation of to_int at line 21. Possible FailurePath: [L18] int A, R; [L19] int u, v, r; [L20] A = __VERIFIER_nondet_double() [L21] R = __VERIFIER_nondet_double() [L23] CALL assume_abort_if_not((R - 1) * (R - 1) < A) [L7] COND FALSE !(!cond) [L23] RET assume_abort_if_not((R - 1) * (R - 1) < A) [L25] CALL assume_abort_if_not(A % 2 == 1) [L7] COND FALSE !(!cond) [L25] RET assume_abort_if_not(A % 2 == 1) [L27] u = 2 * R + 1 [L28] v = 1 [L29] r = R * R - A [L31] COND FALSE !(1) [L45] CALL __VERIFIER_assert(4*A == u*u - v*v - 2*u + 2*v) [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 2, 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=43occurred 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...