/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:13:46,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:13:46,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:13:46,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:13:46,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:13:46,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:13:46,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:13:46,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:13:46,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:13:46,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:13:46,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:13:46,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:13:46,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:13:46,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:13:46,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:13:46,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:13:46,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:13:46,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:13:46,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:13:46,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:13:46,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:13:46,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:13:46,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:13:46,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:13:46,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:13:46,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:13:46,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:13:46,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:13:46,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:13:46,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:13:46,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:13:46,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:13:46,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:13:46,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:13:46,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:13:46,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:13:46,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:13:46,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:13:46,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:13:46,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:13:46,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:13:46,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:13:46,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:13:46,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:13:46,910 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:13:46,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:13:46,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:13:46,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:13:46,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:13:46,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:13:46,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:13:46,914 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:13:47,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:13:47,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:13:47,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:13:47,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:13:47,230 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:13:47,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-18 00:13:47,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12351a6c5/523282ea380744f4b93784b1d87e7b23/FLAGe21d5080d [2020-07-18 00:13:47,788 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:13:47,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-07-18 00:13:47,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12351a6c5/523282ea380744f4b93784b1d87e7b23/FLAGe21d5080d [2020-07-18 00:13:48,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12351a6c5/523282ea380744f4b93784b1d87e7b23 [2020-07-18 00:13:48,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:13:48,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:13:48,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:13:48,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:13:48,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:13:48,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dabab2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48, skipping insertion in model container [2020-07-18 00:13:48,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:13:48,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:13:48,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:13:48,383 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:13:48,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:13:48,418 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:13:48,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48 WrapperNode [2020-07-18 00:13:48,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:13:48,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:13:48,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:13:48,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:13:48,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... [2020-07-18 00:13:48,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:13:48,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:13:48,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:13:48,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:13:48,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-18 00:13:48,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:13:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:13:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:13:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:13:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:13:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-18 00:13:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:13:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:13:48,610 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:13:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:13:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:13:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:13:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:13:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:13:48,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:13:48,918 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:13:48,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:13:48 BoogieIcfgContainer [2020-07-18 00:13:48,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:13:48,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:13:48,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:13:48,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:13:48,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:13:48" (1/3) ... [2020-07-18 00:13:48,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe0625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:13:48, skipping insertion in model container [2020-07-18 00:13:48,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:13:48" (2/3) ... [2020-07-18 00:13:48,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fe0625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:13:48, skipping insertion in model container [2020-07-18 00:13:48,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:13:48" (3/3) ... [2020-07-18 00:13:48,931 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2020-07-18 00:13:48,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:13:48,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:13:48,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:13:48,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:13:48,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:13:48,984 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:13:48,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:13:48,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:13:48,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:13:48,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:13:48,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:13:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-18 00:13:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:13:49,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:13:49,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:13:49,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:13:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:13:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash -273447452, now seen corresponding path program 1 times [2020-07-18 00:13:49,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:13:49,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021792405] [2020-07-18 00:13:49,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:13:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:13:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:13:49,190 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-18 00:13:49,190 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {36#true} {36#true} #60#return; {36#true} is VALID [2020-07-18 00:13:49,193 INFO L263 TraceCheckUtils]: 0: Hoare triple {36#true} call ULTIMATE.init(); {36#true} is VALID [2020-07-18 00:13:49,194 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} assume true; {36#true} is VALID [2020-07-18 00:13:49,195 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {36#true} {36#true} #60#return; {36#true} is VALID [2020-07-18 00:13:49,195 INFO L263 TraceCheckUtils]: 3: Hoare triple {36#true} call #t~ret3 := main(); {36#true} is VALID [2020-07-18 00:13:49,195 INFO L280 TraceCheckUtils]: 4: Hoare triple {36#true} ~x~0 := #t~nondet0; {36#true} is VALID [2020-07-18 00:13:49,196 INFO L280 TraceCheckUtils]: 5: Hoare triple {36#true} havoc #t~nondet0; {36#true} is VALID [2020-07-18 00:13:49,197 INFO L280 TraceCheckUtils]: 6: Hoare triple {36#true} ~exp~0 := 1.0; {36#true} is VALID [2020-07-18 00:13:49,197 INFO L280 TraceCheckUtils]: 7: Hoare triple {36#true} ~term~0 := 1.0; {36#true} is VALID [2020-07-18 00:13:49,197 INFO L280 TraceCheckUtils]: 8: Hoare triple {36#true} ~count~0 := 1; {36#true} is VALID [2020-07-18 00:13:49,198 INFO L280 TraceCheckUtils]: 9: Hoare triple {36#true} ~result~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(2), ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(1), ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(1), ~x~0))); {36#true} is VALID [2020-07-18 00:13:49,198 INFO L280 TraceCheckUtils]: 10: Hoare triple {36#true} havoc ~temp~0; {36#true} is VALID [2020-07-18 00:13:49,200 INFO L280 TraceCheckUtils]: 11: Hoare triple {36#true} assume false; {37#false} is VALID [2020-07-18 00:13:49,200 INFO L263 TraceCheckUtils]: 12: Hoare triple {37#false} call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~result~0, ~exp~0) then 1 else 0)); {37#false} is VALID [2020-07-18 00:13:49,201 INFO L280 TraceCheckUtils]: 13: Hoare triple {37#false} ~cond := #in~cond; {37#false} is VALID [2020-07-18 00:13:49,201 INFO L280 TraceCheckUtils]: 14: Hoare triple {37#false} assume 0 == ~cond; {37#false} is VALID [2020-07-18 00:13:49,201 INFO L280 TraceCheckUtils]: 15: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-18 00:13:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:13:49,206 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:13:49,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021792405] [2020-07-18 00:13:49,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:13:49,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:13:49,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615546672] [2020-07-18 00:13:49,217 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-18 00:13:49,220 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:13:49,224 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:13:49,269 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:13:49,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:13:49,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:13:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:13:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:13:49,280 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-07-18 00:13:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:13:49,400 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-18 00:13:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:13:49,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-18 00:13:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:13:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:13:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2020-07-18 00:13:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:13:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2020-07-18 00:13:49,422 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 49 transitions. [2020-07-18 00:13:49,506 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:13:49,519 INFO L225 Difference]: With dead ends: 45 [2020-07-18 00:13:49,519 INFO L226 Difference]: Without dead ends: 26 [2020-07-18 00:13:49,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:13:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-18 00:13:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-18 00:13:49,580 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:13:49,580 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2020-07-18 00:13:49,581 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-18 00:13:49,581 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-18 00:13:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:13:49,585 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-18 00:13:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 00:13:49,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:13:49,586 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:13:49,587 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-18 00:13:49,587 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-18 00:13:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:13:49,591 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-18 00:13:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 00:13:49,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:13:49,592 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:13:49,593 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:13:49,593 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:13:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-18 00:13:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-18 00:13:49,598 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 16 [2020-07-18 00:13:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:13:49,599 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-18 00:13:49,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:13:49,599 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states and 26 transitions. [2020-07-18 00:13:49,634 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:13:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 00:13:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-18 00:13:49,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:13:49,636 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] [2020-07-18 00:13:49,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:13:49,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:13:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:13:49,637 INFO L82 PathProgramCache]: Analyzing trace with hash 112425219, now seen corresponding path program 1 times [2020-07-18 00:13:49,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:13:49,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258421912] [2020-07-18 00:13:49,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:13:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:13:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:13:49,702 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:13:49,702 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:13:49,703 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:13:49,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:13:49,719 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:13:49,719 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:13:49,719 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:13:49,719 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 00:13:49,719 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:13:49,720 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 00:13:49,720 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:13:49,720 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:13:49,720 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:13:49,720 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:13:49,721 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:13:49,721 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-18 00:13:49,721 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-18 00:13:49,721 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2020-07-18 00:13:49,721 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:13:49,722 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-18 00:13:49,722 WARN L170 areAnnotationChecker]: L10-3 has no Hoare annotation [2020-07-18 00:13:49,722 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 00:13:49,722 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-18 00:13:49,722 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: L12-3 has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-18 00:13:49,723 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:13:49,724 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L25-3 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 00:13:49,725 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L29-2 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L31-1 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-18 00:13:49,726 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-18 00:13:49,727 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:13:49,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:13:49 BoogieIcfgContainer [2020-07-18 00:13:49,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:13:49,734 INFO L168 Benchmark]: Toolchain (without parser) took 1560.63 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 104.4 MB in the beginning and 105.2 MB in the end (delta: -741.9 kB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,735 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.19 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,737 INFO L168 Benchmark]: Boogie Preprocessor took 136.82 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 94.2 MB in the beginning and 181.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,738 INFO L168 Benchmark]: RCFGBuilder took 365.50 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 163.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,739 INFO L168 Benchmark]: TraceAbstraction took 807.26 ms. Allocated memory is still 203.4 MB. Free memory was 163.0 MB in the beginning and 105.8 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:13:49,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.19 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.82 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 94.2 MB in the beginning and 181.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.50 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 163.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 807.26 ms. Allocated memory is still 203.4 MB. Free memory was 163.0 MB in the beginning and 105.8 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 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: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryArithmeticFLOAToperation at line 28. Possible FailurePath: [L18] float x = __VERIFIER_nondet_float() ; [L19] float exp = 1.0 ; [L20] float term = 1.0 ; [L21] unsigned int count = 1 ; [L22] float result = 2*(1/(1-x)) ; [L23] int temp ; [L25] COND TRUE 1 [L27] term = term * (x/count) [L28] exp = exp + term [L29] count++ [L31] temp = __VERIFIER_nondet_int() [L32] COND TRUE temp ==0 [L35] CALL __VERIFIER_assert( result >= exp ) [L12] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 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...