/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 0.1.25-8fc6572 [2020-07-10 14:37:32,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 14:37:32,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 14:37:32,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 14:37:32,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 14:37:32,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 14:37:32,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 14:37:32,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 14:37:32,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 14:37:32,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 14:37:32,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 14:37:32,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 14:37:32,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 14:37:32,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 14:37:32,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 14:37:32,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 14:37:32,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 14:37:32,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 14:37:32,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 14:37:32,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 14:37:32,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 14:37:32,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 14:37:32,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 14:37:32,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 14:37:32,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 14:37:32,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 14:37:32,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 14:37:32,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 14:37:32,125 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 [2020-07-10 14:37:32,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 14:37:32,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 14:37:32,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 14:37:32,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 14:37:32,165 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 14:37:32,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 14:37:32,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 14:37:32,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 14:37:32,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 14:37:32,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 14:37:32,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 14:37:32,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 14:37:32,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 14:37:32,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 14:37:32,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 14:37:32,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 14:37:32,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 14:37:32,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 14:37:32,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 14:37:32,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 14:37:32,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 14:37:32,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 14:37:32,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 14:37:32,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 14:37:32,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 14:37:32,465 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 14:37:32,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 14:37:32,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 14:37:32,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 14:37:32,485 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 14:37:32,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-10 14:37:32,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c26218/224f16069c2246ebb75305b0d74c9515/FLAG126192db1 [2020-07-10 14:37:33,030 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 14:37:33,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_int_inv_square.c [2020-07-10 14:37:33,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c26218/224f16069c2246ebb75305b0d74c9515/FLAG126192db1 [2020-07-10 14:37:33,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f22c26218/224f16069c2246ebb75305b0d74c9515 [2020-07-10 14:37:33,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 14:37:33,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 14:37:33,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 14:37:33,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 14:37:33,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 14:37:33,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1279cfc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33, skipping insertion in model container [2020-07-10 14:37:33,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 14:37:33,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 14:37:33,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:37:33,626 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 14:37:33,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:37:33,660 INFO L208 MainTranslator]: Completed translation [2020-07-10 14:37:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33 WrapperNode [2020-07-10 14:37:33,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 14:37:33,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 14:37:33,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 14:37:33,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 14:37:33,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (1/1) ... [2020-07-10 14:37:33,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 14:37:33,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 14:37:33,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 14:37:33,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 14:37:33,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (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 [2020-07-10 14:37:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 14:37:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 14:37:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 14:37:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 14:37:33,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 14:37:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 14:37:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 14:37:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 14:37:34,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 14:37:34,078 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 14:37:34,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:37:34 BoogieIcfgContainer [2020-07-10 14:37:34,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 14:37:34,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 14:37:34,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 14:37:34,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 14:37:34,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 02:37:33" (1/3) ... [2020-07-10 14:37:34,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682dc2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:37:34, skipping insertion in model container [2020-07-10 14:37:34,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:37:33" (2/3) ... [2020-07-10 14:37:34,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682dc2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:37:34, skipping insertion in model container [2020-07-10 14:37:34,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:37:34" (3/3) ... [2020-07-10 14:37:34,092 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-07-10 14:37:34,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 14:37:34,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 14:37:34,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 14:37:34,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 14:37:34,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 14:37:34,204 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 14:37:34,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 14:37:34,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 14:37:34,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 14:37:34,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 14:37:34,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 14:37:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-10 14:37:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-10 14:37:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:37:34,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:37:34,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:37:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:37:34,238 INFO L82 PathProgramCache]: Analyzing trace with hash 309552683, now seen corresponding path program 1 times [2020-07-10 14:37:34,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:37:34,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658102972] [2020-07-10 14:37:34,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:37:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:37:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:37:34,415 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:37:34,415 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-10 14:37:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:37:34,430 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-10 14:37:34,432 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-10 14:37:34,432 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-10 14:37:34,432 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-10 14:37:34,433 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {26#true} is VALID [2020-07-10 14:37:34,433 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:37:34,434 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-10 14:37:34,434 INFO L263 TraceCheckUtils]: 3: Hoare triple {26#true} call #t~ret1 := main(); {26#true} is VALID [2020-07-10 14:37:34,435 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 [2020-07-10 14:37:34,435 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 [2020-07-10 14:37:34,436 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-10 14:37:34,437 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-10 14:37:34,438 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-10 14:37:34,438 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-10 14:37:34,439 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#false} ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); {27#false} is VALID [2020-07-10 14:37:34,439 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 [2020-07-10 14:37:34,440 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2020-07-10 14:37:34,440 INFO L280 TraceCheckUtils]: 13: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2020-07-10 14:37:34,441 INFO L280 TraceCheckUtils]: 14: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-10 14:37:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 14:37:34,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658102972] [2020-07-10 14:37:34,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 14:37:34,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 14:37:34,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988447218] [2020-07-10 14:37:34,453 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-10 14:37:34,456 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 14:37:34,460 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 14:37:34,496 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:37:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 14:37:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 14:37:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 14:37:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 14:37:34,512 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-10 14:37:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:37:34,604 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-07-10 14:37:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 14:37:34,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-10 14:37:34,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 14:37:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 14:37:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-10 14:37:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 14:37:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-10 14:37:34,623 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 40 transitions. [2020-07-10 14:37:34,724 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:37:34,736 INFO L225 Difference]: With dead ends: 38 [2020-07-10 14:37:34,736 INFO L226 Difference]: Without dead ends: 16 [2020-07-10 14:37:34,740 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 [2020-07-10 14:37:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-10 14:37:34,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-10 14:37:34,789 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 14:37:34,790 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-10 14:37:34,790 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-10 14:37:34,791 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-10 14:37:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:37:34,795 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-10 14:37:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-10 14:37:34,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:37:34,796 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:37:34,797 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-10 14:37:34,797 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-10 14:37:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:37:34,801 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-10 14:37:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-10 14:37:34,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:37:34,802 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:37:34,803 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 14:37:34,803 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 14:37:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-10 14:37:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-07-10 14:37:34,808 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-07-10 14:37:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 14:37:34,809 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-07-10 14:37:34,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 14:37:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-10 14:37:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-10 14:37:34,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:37:34,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:37:34,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 14:37:34,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:37:34,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:37:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -499793943, now seen corresponding path program 1 times [2020-07-10 14:37:34,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:37:34,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778179176] [2020-07-10 14:37:34,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:37:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:37:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:37:34,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 14:37:34,929 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 14:37:34,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 14:37:34,969 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 14:37:34,969 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 14:37:34,970 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-10 14:37:34,971 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-10 14:37:34,972 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-10 14:37:34,973 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 14:37:34,973 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 14:37:34,973 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 14:37:34,973 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-10 14:37:34,973 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 14:37:34,974 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 14:37:34,974 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. [2020-07-10 14:37:34,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 02:37:34 BoogieIcfgContainer [2020-07-10 14:37:34,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 14:37:34,981 INFO L168 Benchmark]: Toolchain (without parser) took 1579.91 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 103.6 MB in the beginning and 121.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,982 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.31 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,984 INFO L168 Benchmark]: Boogie Preprocessor took 35.60 ms. Allocated memory is still 145.2 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,985 INFO L168 Benchmark]: RCFGBuilder took 384.91 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 92.0 MB in the beginning and 167.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,986 INFO L168 Benchmark]: TraceAbstraction took 893.50 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 121.9 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-07-10 14:37:34,990 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 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.31 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.60 ms. Allocated memory is still 145.2 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.91 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 92.0 MB in the beginning and 167.6 MB in the end (delta: -75.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 893.50 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 121.9 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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...