/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:41:54,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:41:54,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:41:54,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:41:54,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:41:54,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:41:54,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:41:54,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:41:54,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:41:54,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:41:54,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:41:54,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:41:54,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:41:54,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:41:54,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:41:54,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:41:54,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:41:54,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:41:54,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:41:54,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:41:54,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:41:54,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:41:54,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:41:54,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:41:54,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:41:54,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:41:54,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:41:54,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:41:54,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:41:54,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:41:54,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:41:54,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:41:54,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:41:54,258 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:41:54,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:41:54,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:41:54,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:41:54,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:41:54,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:41:54,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:41:54,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:41:54,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:41:54,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:41:54,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:41:54,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:41:54,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:41:54,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:41:54,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:41:54,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:41:54,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:41:54,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:41:54,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:41:54,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:41:54,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:41:54,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:41:54,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:41:54,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:41:54,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:41:54,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:41:54,729 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:41:54,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2020-12-22 03:41:54,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12cc6f53/5cebd2c88de948c98c35a1cdce7bcb36/FLAGbe45bd223 [2020-12-22 03:41:55,387 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:41:55,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2020-12-22 03:41:55,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12cc6f53/5cebd2c88de948c98c35a1cdce7bcb36/FLAGbe45bd223 [2020-12-22 03:41:55,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12cc6f53/5cebd2c88de948c98c35a1cdce7bcb36 [2020-12-22 03:41:55,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:41:55,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:41:55,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:55,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:41:55,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:41:55,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:55" (1/1) ... [2020-12-22 03:41:55,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678e4a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:55, skipping insertion in model container [2020-12-22 03:41:55,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:55" (1/1) ... [2020-12-22 03:41:55,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:41:55,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:41:55,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2020-12-22 03:41:56,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:56,019 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:41:56,045 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2020-12-22 03:41:56,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:56,066 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:41:56,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56 WrapperNode [2020-12-22 03:41:56,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:56,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:56,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:41:56,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:41:56,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:56,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:41:56,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:41:56,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:41:56,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (1/1) ... [2020-12-22 03:41:56,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:41:56,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:41:56,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:41:56,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:41:56,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (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 [2020-12-22 03:41:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:41:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:41:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:41:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:41:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:41:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:41:56,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:41:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:41:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:41:56,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:41:56,618 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:41:56,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:56 BoogieIcfgContainer [2020-12-22 03:41:56,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:41:56,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:41:56,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:41:56,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:41:56,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:41:55" (1/3) ... [2020-12-22 03:41:56,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f11771a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:56, skipping insertion in model container [2020-12-22 03:41:56,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:56" (2/3) ... [2020-12-22 03:41:56,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f11771a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:56, skipping insertion in model container [2020-12-22 03:41:56,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:56" (3/3) ... [2020-12-22 03:41:56,693 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2020-12-22 03:41:56,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:41:56,734 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:41:56,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:41:56,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:41:56,789 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:41:56,789 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:41:56,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:41:56,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:41:56,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:41:56,790 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:41:56,790 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:41:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 03:41:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:41:56,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:56,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:56,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:56,816 INFO L82 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2020-12-22 03:41:56,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:56,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568052631] [2020-12-22 03:41:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:57,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568052631] [2020-12-22 03:41:57,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:57,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:41:57,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861155005] [2020-12-22 03:41:57,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:41:57,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:41:57,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:41:57,120 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-12-22 03:41:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:57,203 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2020-12-22 03:41:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:41:57,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 03:41:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:57,233 INFO L225 Difference]: With dead ends: 49 [2020-12-22 03:41:57,236 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 03:41:57,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 03:41:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2020-12-22 03:41:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 03:41:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2020-12-22 03:41:57,297 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2020-12-22 03:41:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:57,298 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-12-22 03:41:57,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:41:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2020-12-22 03:41:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:41:57,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:57,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:57,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:41:57,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1250925041, now seen corresponding path program 1 times [2020-12-22 03:41:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:57,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850985869] [2020-12-22 03:41:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:57,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850985869] [2020-12-22 03:41:57,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:57,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:41:57,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647424855] [2020-12-22 03:41:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:41:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:41:57,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:57,448 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 5 states. [2020-12-22 03:41:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:57,561 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2020-12-22 03:41:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 03:41:57,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 03:41:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:57,563 INFO L225 Difference]: With dead ends: 44 [2020-12-22 03:41:57,563 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 03:41:57,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 03:41:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 20. [2020-12-22 03:41:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 03:41:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2020-12-22 03:41:57,571 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 15 [2020-12-22 03:41:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:57,572 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-12-22 03:41:57,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:41:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-12-22 03:41:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:41:57,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:57,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:57,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:41:57,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1796523982, now seen corresponding path program 1 times [2020-12-22 03:41:57,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:57,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405942149] [2020-12-22 03:41:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 03:41:57,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405942149] [2020-12-22 03:41:57,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:57,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:41:57,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183620467] [2020-12-22 03:41:57,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:41:57,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:41:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:57,665 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2020-12-22 03:41:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:57,718 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-12-22 03:41:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 03:41:57,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 03:41:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:57,720 INFO L225 Difference]: With dead ends: 41 [2020-12-22 03:41:57,720 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 03:41:57,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 03:41:57,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-12-22 03:41:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 03:41:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-22 03:41:57,728 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2020-12-22 03:41:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:57,728 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-22 03:41:57,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:41:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-22 03:41:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:41:57,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:57,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:57,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:41:57,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1813534643, now seen corresponding path program 1 times [2020-12-22 03:41:57,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:57,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372816846] [2020-12-22 03:41:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:57,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:57,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:57,839 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:41:57,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:41:57,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:41:57,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:41:57 BoogieIcfgContainer [2020-12-22 03:41:57,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:41:57,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:41:57,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:41:57,906 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:41:57,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:56" (3/4) ... [2020-12-22 03:41:57,911 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:41:57,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:41:57,914 INFO L168 Benchmark]: Toolchain (without parser) took 2154.30 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 78.4 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,915 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:57,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 115.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.05 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,918 INFO L168 Benchmark]: Boogie Preprocessor took 29.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,919 INFO L168 Benchmark]: RCFGBuilder took 483.46 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 96.5 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,920 INFO L168 Benchmark]: TraceAbstraction took 1225.96 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 78.4 MB in the end (delta: 56.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:57,920 INFO L168 Benchmark]: Witness Printer took 5.81 ms. Allocated memory is still 151.0 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:57,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 305.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 115.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.05 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 483.46 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 96.5 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1225.96 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 78.4 MB in the end (delta: 56.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.81 ms. Allocated memory is still 151.0 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of to_real at line 46. Possible FailurePath: [L1] int __return_main; [L17] double __return_104; VAL [__return_104=0, __return_main=0] [L20] double main__a; [L21] double main__r; [L22] main__a = __VERIFIER_nondet_double() [L23] int main____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L24] COND TRUE main__a >= 20.0 VAL [__return_104=0, __return_main=0] [L26] COND TRUE main__a <= 30.0 [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_104=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] double __tmp_1; [L34] __tmp_1 = main__a [L35] double inv__A; [L36] inv__A = __tmp_1 [L37] double inv__xi; [L38] double inv__xsi; [L39] double inv__temp; [L40] signed int inv__cond; [L41] signed int inv__exp; [L42] union double_int inv__A_u; [L43] union double_int inv__xi_u; [L44] inv__A_u.d = inv__A [L45] EXPR inv__A_u.i [L45] inv__exp = ((signed int)(((inv__A_u.i) & 2146435072) >> 20)) - 1023 [L46] inv__xi_u.d = 1 [L47] inv__xi_u.i = (1023 - inv__exp) << 20 [L48] EXPR inv__xi_u.d [L48] inv__xi = inv__xi_u.d [L49] inv__cond = 1 VAL [__return_104=0, __return_main=0] [L51] COND TRUE !(inv__cond == 0) [L53] inv__xsi = (2 * inv__xi) - ((inv__A * inv__xi) * inv__xi) [L54] inv__temp = inv__xsi - inv__xi [L55] int inv____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L56] COND FALSE !(inv__temp > 1.0E-10) VAL [__return_104=0, __return_main=0] [L67] COND FALSE !(inv__temp < -1.0E-10) [L73] inv____CPAchecker_TMP_0 = 0 VAL [__return_104=0, __return_main=0] [L61] inv__cond = inv____CPAchecker_TMP_0 [L62] inv__xi = inv__xsi VAL [__return_104=0, __return_main=0] [L51] COND FALSE !(!(inv__cond == 0)) [L80] __return_104 = inv__xi [L81] main__r = __return_104 [L82] int main____CPAchecker_TMP_1; VAL [__return_104=2145386497, __return_main=0] [L83] COND FALSE !(main__r >= 0) VAL [__return_104=2145386497, __return_main=0] [L108] main____CPAchecker_TMP_1 = 0 VAL [__return_104=2145386497, __return_main=0] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_1 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [__return_104=2145386497, __return_main=0] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_104=2145386497, __return_main=0] [L96] reach_error() VAL [__return_104=2145386497, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 83 SDslu, 149 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...