/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:43:33,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:43:33,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:43:33,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:43:33,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:43:33,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:43:33,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:43:33,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:43:33,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:43:33,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:43:33,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:43:33,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:43:33,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:43:33,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:43:33,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:43:33,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:43:33,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:43:33,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:43:33,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:43:33,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:43:33,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:43:33,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:43:33,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:43:33,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:43:33,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:43:33,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:43:33,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:43:33,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:43:33,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:43:33,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:43:33,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:43:33,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:43:33,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:43:33,376 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:43:33,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:43:33,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:43:33,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:43:33,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:43:33,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:43:33,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:43:33,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:43:33,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:43:33,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:43:33,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:43:33,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:43:33,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:43:33,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:43:33,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:43:33,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:43:33,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:43:33,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:43:33,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:43:33,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:43:33,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:43:33,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:43:33,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:43:33,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:43:33,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:43:33,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:43:33,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:43:33,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:43:33,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:43:33,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:43:33,733 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:43:33,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 02:43:33,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1153fb0/385e8719c6144135ae1e3ce63186e8d8/FLAG7708c7484 [2020-08-19 02:43:34,303 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:43:34,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 02:43:34,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1153fb0/385e8719c6144135ae1e3ce63186e8d8/FLAG7708c7484 [2020-08-19 02:43:34,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1153fb0/385e8719c6144135ae1e3ce63186e8d8 [2020-08-19 02:43:34,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:43:34,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:43:34,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:34,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:43:34,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:43:34,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:34" (1/1) ... [2020-08-19 02:43:34,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6f99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:34, skipping insertion in model container [2020-08-19 02:43:34,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:43:34" (1/1) ... [2020-08-19 02:43:34,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:43:34,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:43:35,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:35,019 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:43:35,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:43:35,190 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:43:35,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35 WrapperNode [2020-08-19 02:43:35,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:43:35,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:43:35,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:43:35,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:43:35,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (1/1) ... [2020-08-19 02:43:35,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:43:35,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:43:35,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:43:35,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:43:35,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (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 [2020-08-19 02:43:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:43:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:43:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 02:43:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-19 02:43:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:43:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:43:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 02:43:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 02:43:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:43:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-19 02:43:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:43:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:43:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 02:43:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:43:35,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:43:35,803 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 02:43:35,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:35 BoogieIcfgContainer [2020-08-19 02:43:35,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:43:35,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:43:35,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:43:35,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:43:35,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:43:34" (1/3) ... [2020-08-19 02:43:35,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ff83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:35, skipping insertion in model container [2020-08-19 02:43:35,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:43:35" (2/3) ... [2020-08-19 02:43:35,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676ff83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:43:35, skipping insertion in model container [2020-08-19 02:43:35,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:43:35" (3/3) ... [2020-08-19 02:43:35,820 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-19 02:43:35,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:43:35,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:43:35,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:43:35,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:43:35,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:43:35,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:43:35,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:43:35,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:43:35,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:43:35,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:43:35,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:43:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-19 02:43:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 02:43:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:35,908 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, 1, 1, 1, 1, 1] [2020-08-19 02:43:35,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:35,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-19 02:43:35,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:35,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548597024] [2020-08-19 02:43:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:36,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:43:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:43:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:43:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:43:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:43:36,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548597024] [2020-08-19 02:43:36,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:43:36,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:43:36,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373691521] [2020-08-19 02:43:36,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:43:36,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:43:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:43:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:43:36,240 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-19 02:43:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:43:36,501 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-19 02:43:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:43:36,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 02:43:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:43:36,518 INFO L225 Difference]: With dead ends: 112 [2020-08-19 02:43:36,518 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 02:43:36,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:43:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 02:43:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 02:43:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 02:43:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-19 02:43:36,573 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-19 02:43:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:43:36,573 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-19 02:43:36,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:43:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-19 02:43:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 02:43:36,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:43:36,576 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:43:36,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:43:36,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:43:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:43:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-19 02:43:36,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:43:36,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111637779] [2020-08-19 02:43:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:43:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:43:36,675 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:43:36,675 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:43:36,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:43:36,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:43:36 BoogieIcfgContainer [2020-08-19 02:43:36,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:43:36,717 INFO L168 Benchmark]: Toolchain (without parser) took 2029.89 ms. Allocated memory was 148.9 MB in the beginning and 232.8 MB in the end (delta: 83.9 MB). Free memory was 103.3 MB in the beginning and 202.2 MB in the end (delta: -99.0 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,720 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.50 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.1 MB in the beginning and 180.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,722 INFO L168 Benchmark]: Boogie Preprocessor took 53.68 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 178.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,724 INFO L168 Benchmark]: RCFGBuilder took 565.44 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,725 INFO L168 Benchmark]: TraceAbstraction took 896.61 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 149.5 MB in the beginning and 202.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:43:36,732 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 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 509.50 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 103.1 MB in the beginning and 180.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.68 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 178.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 565.44 ms. Allocated memory is still 204.5 MB. Free memory was 178.2 MB in the beginning and 150.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 896.61 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 149.5 MB in the beginning and 202.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...