/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:01:04,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:01:04,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:01:04,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:01:04,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:01:04,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:01:04,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:01:04,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:01:04,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:01:04,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:01:04,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:01:04,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:01:04,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:01:04,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:01:04,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:01:04,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:01:04,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:01:04,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:01:04,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:01:04,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:01:04,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:01:04,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:01:04,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:01:04,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:01:04,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:01:04,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:01:04,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:01:04,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:01:04,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:01:04,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:01:04,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:01:04,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:01:04,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:01:04,282 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:01:04,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:01:04,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:01:04,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:01:04,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:01:04,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:01:04,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:01:04,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:01:04,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:01:04,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:01:04,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:01:04,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:01:04,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:01:04,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:01:04,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:01:04,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:01:04,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:01:04,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:01:04,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:01:04,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:01:04,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:01:04,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:01:04,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:01:04,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:01:04,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:01:04,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:01:04,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:01:04,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:01:04,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:01:04,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:01:04,607 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:01:04,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-17 22:01:04,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc8d3714/a779c03f2fe344b2a3892a355b06e2ba/FLAGac09abeab [2020-07-17 22:01:05,089 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:01:05,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-17 22:01:05,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc8d3714/a779c03f2fe344b2a3892a355b06e2ba/FLAGac09abeab [2020-07-17 22:01:05,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc8d3714/a779c03f2fe344b2a3892a355b06e2ba [2020-07-17 22:01:05,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:01:05,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:01:05,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:01:05,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:01:05,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:01:05,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253e11d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05, skipping insertion in model container [2020-07-17 22:01:05,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:01:05,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:01:05,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:01:05,678 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:01:05,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:01:05,710 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:01:05,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05 WrapperNode [2020-07-17 22:01:05,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:01:05,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:01:05,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:01:05,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:01:05,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (1/1) ... [2020-07-17 22:01:05,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:01:05,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:01:05,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:01:05,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:01:05,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (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 [2020-07-17 22:01:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:01:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:01:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:01:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:01:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:01:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:01:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:01:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:01:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:01:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:01:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:01:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:01:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:01:06,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:01:06,107 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:01:06,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:01:06 BoogieIcfgContainer [2020-07-17 22:01:06,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:01:06,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:01:06,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:01:06,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:01:06,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:01:05" (1/3) ... [2020-07-17 22:01:06,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d986a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:01:06, skipping insertion in model container [2020-07-17 22:01:06,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:05" (2/3) ... [2020-07-17 22:01:06,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d986a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:01:06, skipping insertion in model container [2020-07-17 22:01:06,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:01:06" (3/3) ... [2020-07-17 22:01:06,120 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-07-17 22:01:06,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:01:06,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:01:06,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:01:06,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:01:06,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:01:06,181 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:01:06,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:01:06,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:01:06,181 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:01:06,181 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:01:06,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:01:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-17 22:01:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 22:01:06,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:01:06,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:01:06,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:01:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:01:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash 309552683, now seen corresponding path program 1 times [2020-07-17 22:01:06,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:01:06,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343593501] [2020-07-17 22:01:06,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:01:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:06,359 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:01:06,359 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-17 22:01:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:06,374 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-17 22:01:06,375 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-17 22:01:06,376 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-17 22:01:06,376 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-17 22:01:06,377 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {26#true} is VALID [2020-07-17 22:01:06,377 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:01:06,377 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-17 22:01:06,378 INFO L263 TraceCheckUtils]: 3: Hoare triple {26#true} call #t~ret1 := main(); {26#true} is VALID [2020-07-17 22:01:06,378 INFO L280 TraceCheckUtils]: 4: Hoare triple {26#true} havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0; {26#true} is VALID [2020-07-17 22:01:06,379 INFO L263 TraceCheckUtils]: 5: Hoare triple {26#true} call assume_abort_if_not((if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0)); {26#true} is VALID [2020-07-17 22:01:06,379 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-17 22:01:06,386 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-17 22:01:06,386 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-17 22:01:06,386 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-17 22:01:06,387 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#false} ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); {27#false} is VALID [2020-07-17 22:01:06,387 INFO L263 TraceCheckUtils]: 11: Hoare triple {27#false} call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); {27#false} is VALID [2020-07-17 22:01:06,388 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2020-07-17 22:01:06,388 INFO L280 TraceCheckUtils]: 13: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2020-07-17 22:01:06,389 INFO L280 TraceCheckUtils]: 14: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-17 22:01:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:01:06,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343593501] [2020-07-17 22:01:06,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:01:06,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:01:06,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345019022] [2020-07-17 22:01:06,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-17 22:01:06,404 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:01:06,407 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:01:06,442 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:01:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:01:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:01:06,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:01:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:01:06,452 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-17 22:01:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:06,512 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-07-17 22:01:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:01:06,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-17 22:01:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:01:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:01:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-17 22:01:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:01:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-17 22:01:06,531 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 40 transitions. [2020-07-17 22:01:06,606 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:01:06,615 INFO L225 Difference]: With dead ends: 38 [2020-07-17 22:01:06,615 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 22:01:06,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:01:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 22:01:06,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-17 22:01:06,666 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:01:06,667 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:06,667 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:06,668 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:06,674 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-17 22:01:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:06,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:01:06,676 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:01:06,677 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:06,677 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:06,684 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-17 22:01:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:06,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:01:06,686 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:01:06,686 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:01:06,688 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:01:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 22:01:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-07-17 22:01:06,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-07-17 22:01:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:01:06,695 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-07-17 22:01:06,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:01:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 22:01:06,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:01:06,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:01:06,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:01:06,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:01:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:01:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash -499793943, now seen corresponding path program 1 times [2020-07-17 22:01:06,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:01:06,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682998884] [2020-07-17 22:01:06,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:01:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:01:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:01:06,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:01:06,780 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:01:06,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:01:06,799 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:01:06,799 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:01:06,799 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:01:06,800 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:01:06,800 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:01:06,800 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:01:06,800 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:01:06,800 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:01:06,801 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-17 22:01:06,802 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-17 22:01:06,803 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-17 22:01:06,803 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:01:06,803 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-17 22:01:06,803 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:01:06,803 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:01:06,803 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. [2020-07-17 22:01:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:01:06 BoogieIcfgContainer [2020-07-17 22:01:06,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:01:06,810 INFO L168 Benchmark]: Toolchain (without parser) took 1330.02 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 118.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,811 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.34 ms. Allocated memory is still 136.3 MB. Free memory was 99.8 MB in the beginning and 90.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,813 INFO L168 Benchmark]: Boogie Preprocessor took 29.48 ms. Allocated memory is still 136.3 MB. Free memory was 90.2 MB in the beginning and 88.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,814 INFO L168 Benchmark]: RCFGBuilder took 371.33 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 88.6 MB in the beginning and 164.6 MB in the end (delta: -76.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,815 INFO L168 Benchmark]: TraceAbstraction took 693.20 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 118.9 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:06,818 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 1.43 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 229.34 ms. Allocated memory is still 136.3 MB. Free memory was 99.8 MB in the beginning and 90.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.48 ms. Allocated memory is still 136.3 MB. Free memory was 90.2 MB in the beginning and 88.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.33 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 88.6 MB in the beginning and 164.6 MB in the end (delta: -76.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 693.20 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 118.9 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L13] int x; [L14] float y, z; [L16] x = __VERIFIER_nondet_int() [L17] CALL assume_abort_if_not(x >= -10 && x <= 10) VAL [\old(cond)=1] [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L17] RET assume_abort_if_not(x >= -10 && x <= 10) VAL [x=0] [L19] y = x*x - 4.f VAL [x=0] [L20] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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...