/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/nla-digbench-scaling/fermat1-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:18:13,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:18:13,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:18:13,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:18:13,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:18:13,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:18:13,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:18:13,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:18:13,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:18:13,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:18:13,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:18:13,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:18:13,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:18:13,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:18:13,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:18:13,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:18:13,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:18:13,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:18:13,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:18:13,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:18:13,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:18:13,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:18:13,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:18:13,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:18:13,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:18:13,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:18:13,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:18:13,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:18:13,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:18:13,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:18:13,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:18:13,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:18:13,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:18:13,744 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:18:13,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:18:13,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:18:13,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:18:13,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:18:13,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:18:13,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:18:13,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:18:13,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:18:13,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:18:13,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:18:13,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:18:13,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:18:13,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:18:13,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:18:13,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:18:13,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:18:14,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:18:14,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:18:14,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:18:14,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:18:14,202 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:18:14,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2020-12-22 05:18:14,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8231ce4d9/fcf1d2b58a034ed8a1890db6c9431790/FLAGaa4257e05 [2020-12-22 05:18:14,885 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:18:14,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2020-12-22 05:18:14,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8231ce4d9/fcf1d2b58a034ed8a1890db6c9431790/FLAGaa4257e05 [2020-12-22 05:18:15,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8231ce4d9/fcf1d2b58a034ed8a1890db6c9431790 [2020-12-22 05:18:15,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:18:15,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:18:15,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:15,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:18:15,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:18:15,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e393b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15, skipping insertion in model container [2020-12-22 05:18:15,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:18:15,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:18:15,441 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/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2020-12-22 05:18:15,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:15,475 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:18:15,490 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/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2020-12-22 05:18:15,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:15,518 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:18:15,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15 WrapperNode [2020-12-22 05:18:15,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:15,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:15,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:18:15,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:18:15,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:15,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:18:15,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:18:15,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:18:15,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (1/1) ... [2020-12-22 05:18:15,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:18:15,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:18:15,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:18:15,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:18:15,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (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 05:18:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:18:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:18:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:18:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:18:16,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:18:16,129 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-22 05:18:16,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:16 BoogieIcfgContainer [2020-12-22 05:18:16,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:18:16,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:18:16,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:18:16,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:18:16,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:18:15" (1/3) ... [2020-12-22 05:18:16,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51beeee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:16, skipping insertion in model container [2020-12-22 05:18:16,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:15" (2/3) ... [2020-12-22 05:18:16,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51beeee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:16, skipping insertion in model container [2020-12-22 05:18:16,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:16" (3/3) ... [2020-12-22 05:18:16,141 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound1.c [2020-12-22 05:18:16,149 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:18:16,155 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 05:18:16,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 05:18:16,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:18:16,251 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:18:16,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:18:16,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:18:16,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:18:16,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:18:16,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:18:16,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:18:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 05:18:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:18:16,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:16,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:16,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1233832305, now seen corresponding path program 1 times [2020-12-22 05:18:16,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:16,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453519517] [2020-12-22 05:18:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:16,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:16,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383851734] [2020-12-22 05:18:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:16,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-22 05:18:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:16,619 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 05:18:16,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453519517] [2020-12-22 05:18:16,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:16,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383851734] [2020-12-22 05:18:16,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:16,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:18:16,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86552372] [2020-12-22 05:18:16,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:18:16,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:16,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:18:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:18:16,646 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-22 05:18:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:16,667 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2020-12-22 05:18:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:18:16,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:18:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:16,679 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:18:16,679 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:18:16,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:18:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:18:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:18:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:18:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-12-22 05:18:16,722 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 10 [2020-12-22 05:18:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:16,723 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-12-22 05:18:16,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:18:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-12-22 05:18:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:18:16,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:16,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:16,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:18:16,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-22 05:18:16,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:16,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509695879] [2020-12-22 05:18:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:16,960 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:16,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449342615] [2020-12-22 05:18:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:18:17,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:17,245 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 05:18:17,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509695879] [2020-12-22 05:18:17,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:17,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449342615] [2020-12-22 05:18:17,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:17,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:18:17,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403176493] [2020-12-22 05:18:17,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:18:17,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:18:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:18:17,254 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 6 states. [2020-12-22 05:18:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:23,898 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2020-12-22 05:18:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:18:23,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:18:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:23,903 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:18:23,904 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 05:18:23,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:18:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 05:18:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2020-12-22 05:18:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 05:18:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-12-22 05:18:23,938 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 10 [2020-12-22 05:18:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:23,939 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-12-22 05:18:23,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:18:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2020-12-22 05:18:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:18:23,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:23,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:24,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:24,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:24,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1507375428, now seen corresponding path program 1 times [2020-12-22 05:18:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:24,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823824951] [2020-12-22 05:18:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:24,170 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:24,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376825124] [2020-12-22 05:18:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:24,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:18:24,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:24,261 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 05:18:24,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823824951] [2020-12-22 05:18:24,262 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:24,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376825124] [2020-12-22 05:18:24,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:24,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:18:24,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722452917] [2020-12-22 05:18:24,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:18:24,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:18:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:18:24,266 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand 4 states. [2020-12-22 05:18:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:24,299 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-12-22 05:18:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:18:24,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:18:24,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:24,302 INFO L225 Difference]: With dead ends: 46 [2020-12-22 05:18:24,302 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 05:18:24,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:18:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 05:18:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 05:18:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:18:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-12-22 05:18:24,315 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 11 [2020-12-22 05:18:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:24,315 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-12-22 05:18:24,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:18:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-12-22 05:18:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:18:24,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:24,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:24,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:24,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:24,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1189409771, now seen corresponding path program 1 times [2020-12-22 05:18:24,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:24,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738664613] [2020-12-22 05:18:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:24,545 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:24,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343594381] [2020-12-22 05:18:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:24,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:18:24,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:26,679 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-22 05:18:26,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738664613] [2020-12-22 05:18:26,898 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:26,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343594381] [2020-12-22 05:18:26,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:18:26,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:26,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:18:26,899 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:18:26,900 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:18:27,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:27,133 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:18:27,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:18:27 BoogieIcfgContainer [2020-12-22 05:18:27,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:18:27,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:18:27,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:18:27,135 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:18:27,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:16" (3/4) ... [2020-12-22 05:18:27,140 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:18:27,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:18:27,142 INFO L168 Benchmark]: Toolchain (without parser) took 11901.31 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 127.1 MB in the beginning and 160.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:27,142 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:18:27,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:27,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.50 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:27,148 INFO L168 Benchmark]: Boogie Preprocessor took 27.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:27,149 INFO L168 Benchmark]: RCFGBuilder took 537.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 98.1 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:18:27,150 INFO L168 Benchmark]: TraceAbstraction took 11001.01 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 97.6 MB in the beginning and 161.1 MB in the end (delta: -63.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:18:27,152 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 201.3 MB. Free memory was 161.1 MB in the beginning and 160.5 MB in the end (delta: 517.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:18:27,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.50 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 98.1 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11001.01 ms. Allocated memory was 151.0 MB in the beginning and 201.3 MB in the end (delta: 50.3 MB). Free memory was 97.6 MB in the beginning and 161.1 MB in the end (delta: -63.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.26 ms. Allocated memory is still 201.3 MB. Free memory was 161.1 MB in the beginning and 160.5 MB in the end (delta: 517.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A [L34] EXPR counter++ [L34] COND TRUE counter++<1 [L12] COND FALSE !(!(cond)) [L36] COND TRUE !(r != 0) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 10.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 85 SDslu, 106 SDs, 0 SdLazy, 73 SolverSat, 6 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2004 SizeOfPredicates, 8 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...