/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/inv_square_int.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:01:17,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:01:17,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:01:17,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:01:17,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:01:17,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:01:17,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:01:17,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:01:17,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:01:17,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:01:17,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:01:17,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:01:17,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:01:17,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:01:17,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:01:17,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:01:17,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:01:17,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:01:17,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:01:17,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:01:17,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:01:17,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:01:17,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:01:17,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:01:17,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:01:17,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:01:17,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:01:17,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:01:17,814 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 22:01:17,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:01:17,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:01:17,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:01:17,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:01:17,837 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:01:17,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:01:17,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:01:17,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:01:17,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:01:17,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:01:17,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:01:17,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:01:17,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:01:17,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:01:17,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:01:17,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:01:17,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:01:17,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:01:17,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:01:17,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:01:17,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:01:17,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:01:17,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:01:17,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:01:17,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:01:17,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:01:17,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:01:17,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:01:17,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:01:17,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:01:18,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:01:18,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:01:18,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:01:18,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:01:18,121 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:01:18,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-07-17 22:01:18,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906b848a8/1d731d7a870445f3a5d81911e83973a7/FLAG2e0d09bda [2020-07-17 22:01:18,671 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:01:18,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_int.c [2020-07-17 22:01:18,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906b848a8/1d731d7a870445f3a5d81911e83973a7/FLAG2e0d09bda [2020-07-17 22:01:19,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906b848a8/1d731d7a870445f3a5d81911e83973a7 [2020-07-17 22:01:19,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:01:19,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:01:19,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:01:19,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:01:19,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:01:19,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bb58da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19, skipping insertion in model container [2020-07-17 22:01:19,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:01:19,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:01:19,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:01:19,279 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:01:19,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:01:19,309 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:01:19,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19 WrapperNode [2020-07-17 22:01:19,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:01:19,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:01:19,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:01:19,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:01:19,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (1/1) ... [2020-07-17 22:01:19,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:01:19,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:01:19,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:01:19,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:01:19,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (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 22:01:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:01:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:01:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:01:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:01:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:01:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:01:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:01:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:01:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:01:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:01:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:01:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:01:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:01:19,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:01:19,746 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:01:19,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:01:19 BoogieIcfgContainer [2020-07-17 22:01:19,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:01:19,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:01:19,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:01:19,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:01:19,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:01:19" (1/3) ... [2020-07-17 22:01:19,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a5b949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:01:19, skipping insertion in model container [2020-07-17 22:01:19,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:01:19" (2/3) ... [2020-07-17 22:01:19,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a5b949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:01:19, skipping insertion in model container [2020-07-17 22:01:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:01:19" (3/3) ... [2020-07-17 22:01:19,775 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2020-07-17 22:01:19,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:01:19,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:01:19,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:01:19,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:01:19,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:01:19,843 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:01:19,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:01:19,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:01:19,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:01:19,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:01:19,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:01:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-17 22:01:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 22:01:19,867 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:01:19,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:01:19,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:01:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:01:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash 309552683, now seen corresponding path program 1 times [2020-07-17 22:01:19,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:01:19,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553886363] [2020-07-17 22:01:19,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:01:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:20,001 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:01:20,001 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-17 22:01:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:01:20,032 INFO L280 TraceCheckUtils]: 0: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-17 22:01:20,033 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-17 22:01:20,033 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-17 22:01:20,034 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-17 22:01:20,034 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {26#true} is VALID [2020-07-17 22:01:20,035 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-17 22:01:20,035 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #30#return; {26#true} is VALID [2020-07-17 22:01:20,035 INFO L263 TraceCheckUtils]: 3: Hoare triple {26#true} call #t~ret1 := main(); {26#true} is VALID [2020-07-17 22:01:20,036 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 22:01:20,036 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 22:01:20,037 INFO L280 TraceCheckUtils]: 6: Hoare triple {26#true} ~cond := #in~cond; {26#true} is VALID [2020-07-17 22:01:20,047 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} assume 0 == ~cond;assume false; {27#false} is VALID [2020-07-17 22:01:20,047 INFO L280 TraceCheckUtils]: 8: Hoare triple {27#false} assume true; {27#false} is VALID [2020-07-17 22:01:20,048 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {27#false} {26#true} #34#return; {27#false} is VALID [2020-07-17 22:01:20,048 INFO L280 TraceCheckUtils]: 10: Hoare triple {27#false} ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 2.0); {27#false} is VALID [2020-07-17 22:01:20,048 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 22:01:20,049 INFO L280 TraceCheckUtils]: 12: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2020-07-17 22:01:20,049 INFO L280 TraceCheckUtils]: 13: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2020-07-17 22:01:20,050 INFO L280 TraceCheckUtils]: 14: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-17 22:01:20,051 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 22:01:20,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553886363] [2020-07-17 22:01:20,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:01:20,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:01:20,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848307310] [2020-07-17 22:01:20,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-17 22:01:20,063 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:01:20,066 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:01:20,098 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 22:01:20,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:01:20,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:01:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:01:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:01:20,111 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-17 22:01:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:20,176 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-07-17 22:01:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:01:20,177 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-17 22:01:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:01:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:01:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-17 22:01:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:01:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2020-07-17 22:01:20,194 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 40 transitions. [2020-07-17 22:01:20,266 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 22:01:20,277 INFO L225 Difference]: With dead ends: 38 [2020-07-17 22:01:20,277 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 22:01:20,281 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 22:01:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 22:01:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-17 22:01:20,322 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:01:20,323 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:20,323 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:20,324 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:20,327 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-17 22:01:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:20,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:01:20,329 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:01:20,329 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:20,329 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:01:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:01:20,333 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-17 22:01:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:20,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:01:20,334 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:01:20,334 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:01:20,334 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:01:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 22:01:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-07-17 22:01:20,339 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-07-17 22:01:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:01:20,339 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-07-17 22:01:20,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:01:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-17 22:01:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 22:01:20,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:01:20,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:01:20,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:01:20,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:01:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:01:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash -499793943, now seen corresponding path program 1 times [2020-07-17 22:01:20,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:01:20,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295831072] [2020-07-17 22:01:20,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:01:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:01:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:01:20,404 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:01:20,404 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:01:20,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:01:20,424 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:01:20,425 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:01:20,425 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:01:20,425 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:01:20,425 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:01:20,425 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:01:20,426 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: L9-2 has no Hoare annotation [2020-07-17 22:01:20,427 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: L11-3 has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:01:20,428 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:01:20,429 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:01:20,429 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-17 22:01:20,429 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:01:20,429 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:01:20,429 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 22:01:20,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:01:20 BoogieIcfgContainer [2020-07-17 22:01:20,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:01:20,436 INFO L168 Benchmark]: Toolchain (without parser) took 1349.62 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 121.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,437 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 140.0 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.16 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 92.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,439 INFO L168 Benchmark]: Boogie Preprocessor took 117.25 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 182.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,439 INFO L168 Benchmark]: RCFGBuilder took 328.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 167.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,440 INFO L168 Benchmark]: TraceAbstraction took 671.12 ms. Allocated memory is still 203.9 MB. Free memory was 167.4 MB in the beginning and 121.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:01:20,444 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 0.44 ms. Allocated memory is still 140.0 MB. Free memory was 120.9 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 222.16 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 92.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.25 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 182.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 167.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 671.12 ms. Allocated memory is still 203.9 MB. Free memory was 167.4 MB in the beginning and 121.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) VAL [x=0] [L21] y = x*x - 2.f VAL [x=0] [L22] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] __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: 0.5s, 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...