/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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-eb0fd7c [2020-09-21 11:33:09,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:33:09,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:33:09,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:33:09,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:33:09,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:33:09,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:33:09,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:33:09,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:33:09,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:33:09,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:33:09,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:33:09,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:33:09,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:33:09,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:33:09,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:33:09,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:33:09,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:33:09,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:33:09,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:33:09,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:33:09,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:33:09,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:33:09,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:33:09,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:33:09,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:33:09,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:33:09,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:33:09,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:33:09,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:33:09,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:33:09,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:33:09,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:33:09,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:33:09,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:33:09,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:33:09,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:33:09,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:33:09,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:33:09,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:33:09,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:33:09,167 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 [2020-09-21 11:33:09,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:33:09,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:33:09,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:33:09,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:33:09,196 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:33:09,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:33:09,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:33:09,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:33:09,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:33:09,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:33:09,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:33:09,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:33:09,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:33:09,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:33:09,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:33:09,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:33:09,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:33:09,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:33:09,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:33:09,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:33:09,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:33:09,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:33:09,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:33:09,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:33:09,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:33:09,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:33:09,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:33:09,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:33:09,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:33:09,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:33:09,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2020-09-21 11:33:09,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e3aa554/3836b65c3a2c4015bb92ba062fb8c89c/FLAGb1061f5a4 [2020-09-21 11:33:10,318 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:33:10,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/fermat2.c [2020-09-21 11:33:10,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e3aa554/3836b65c3a2c4015bb92ba062fb8c89c/FLAGb1061f5a4 [2020-09-21 11:33:10,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9e3aa554/3836b65c3a2c4015bb92ba062fb8c89c [2020-09-21 11:33:10,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:33:10,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:33:10,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:33:10,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:33:10,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:33:10,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:10" (1/1) ... [2020-09-21 11:33:10,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425c36b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:10, skipping insertion in model container [2020-09-21 11:33:10,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:33:10" (1/1) ... [2020-09-21 11:33:10,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:33:10,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:33:11,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:33:11,007 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:33:11,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:33:11,045 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:33:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11 WrapperNode [2020-09-21 11:33:11,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:33:11,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:33:11,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:33:11,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:33:11,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (1/1) ... [2020-09-21 11:33:11,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:33:11,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:33:11,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:33:11,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:33:11,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (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 [2020-09-21 11:33:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:33:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:33:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:33:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:33:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:33:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:33:11,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:33:11,508 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:33:11,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:11 BoogieIcfgContainer [2020-09-21 11:33:11,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:33:11,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:33:11,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:33:11,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:33:11,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:33:10" (1/3) ... [2020-09-21 11:33:11,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546d1dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:11, skipping insertion in model container [2020-09-21 11:33:11,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:33:11" (2/3) ... [2020-09-21 11:33:11,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546d1dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:33:11, skipping insertion in model container [2020-09-21 11:33:11,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:33:11" (3/3) ... [2020-09-21 11:33:11,557 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2020-09-21 11:33:11,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:33:11,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:33:11,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:33:11,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:33:11,679 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:33:11,679 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:33:11,679 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:33:11,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:33:11,680 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:33:11,680 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:33:11,680 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:33:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-21 11:33:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:33:11,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:33:11,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:33:11,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:33:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:33:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-09-21 11:33:11,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:33:11,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330761129] [2020-09-21 11:33:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:33:11,819 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 11:33:11,820 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 11:33:11,820 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:33:11,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:33:11,844 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 11:33:11,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:33:11 BoogieIcfgContainer [2020-09-21 11:33:11,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:33:11,849 INFO L168 Benchmark]: Toolchain (without parser) took 1167.70 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 156.7 MB in the end (delta: -53.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,850 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.53 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,852 INFO L168 Benchmark]: Boogie Preprocessor took 114.89 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,853 INFO L168 Benchmark]: RCFGBuilder took 362.92 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 168.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,854 INFO L168 Benchmark]: TraceAbstraction took 310.64 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 156.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:33:11,859 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.53 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.89 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.92 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 168.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 310.64 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 156.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 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 20. 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 TRUE !cond [L23] RET assume_abort_if_not((R - 1) * (R - 1) < A) [L25] CALL assume_abort_if_not(A % 2 == 1) [L7] COND TRUE !cond [L25] RET assume_abort_if_not(A % 2 == 1) [L27] u = 2 * R + 1 [L28] v = 1 [L29] r = R * R - A [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, 28 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=28occurred 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...