/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:04:52,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:04:52,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:04:52,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:04:52,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:04:52,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:04:52,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:04:52,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:04:52,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:04:52,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:04:52,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:04:52,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:04:52,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:04:52,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:04:52,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:04:52,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:04:52,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:04:52,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:04:52,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:04:52,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:04:52,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:04:52,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:04:52,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:04:52,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:04:52,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:04:52,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:04:52,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:04:52,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:04:52,770 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:04:52,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:04:52,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:04:52,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:04:52,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:04:52,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:04:52,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:04:52,771 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:04:53,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:04:53,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:04:53,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:04:53,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:04:53,206 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:04:53,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-23 22:04:53,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/262d5293e/c89f0437023b4c1992417e6b4733f89d/FLAGf9997442d [2020-10-23 22:04:53,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:04:53,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-10-23 22:04:53,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/262d5293e/c89f0437023b4c1992417e6b4733f89d/FLAGf9997442d [2020-10-23 22:04:54,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/262d5293e/c89f0437023b4c1992417e6b4733f89d [2020-10-23 22:04:54,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:04:54,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:04:54,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:04:54,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:04:54,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:04:54,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a61791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54, skipping insertion in model container [2020-10-23 22:04:54,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:04:54,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:04:54,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:04:54,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:04:54,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:04:54,603 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:04:54,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54 WrapperNode [2020-10-23 22:04:54,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:04:54,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:04:54,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:04:54,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:04:54,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (1/1) ... [2020-10-23 22:04:54,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:04:54,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:04:54,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:04:54,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:04:54,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (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 [2020-10-23 22:04:54,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:04:55,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:04:55,193 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:04:55,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:04:55 BoogieIcfgContainer [2020-10-23 22:04:55,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:04:55,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:04:55,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:04:55,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:04:55,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:04:54" (1/3) ... [2020-10-23 22:04:55,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d465d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:04:55, skipping insertion in model container [2020-10-23 22:04:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:54" (2/3) ... [2020-10-23 22:04:55,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d465d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:04:55, skipping insertion in model container [2020-10-23 22:04:55,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:04:55" (3/3) ... [2020-10-23 22:04:55,207 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-10-23 22:04:55,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:04:55,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:04:55,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:04:55,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:04:55,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:04:55,279 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:04:55,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:04:55,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:04:55,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:04:55,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:04:55,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:04:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-23 22:04:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 22:04:55,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:04:55,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:04:55,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:04:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:04:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1845788812, now seen corresponding path program 1 times [2020-10-23 22:04:55,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:04:55,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732283412] [2020-10-23 22:04:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:04:55,434 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:04:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:04:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:04:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:04:55,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732283412] [2020-10-23 22:04:55,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:04:55,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:04:55,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593878747] [2020-10-23 22:04:55,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:04:55,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:04:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:04:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:04:55,778 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2020-10-23 22:04:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:04:55,937 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-23 22:04:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:04:55,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-23 22:04:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:04:55,949 INFO L225 Difference]: With dead ends: 77 [2020-10-23 22:04:55,949 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 22:04:55,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:04:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 22:04:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-23 22:04:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 22:04:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-23 22:04:56,008 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 43 [2020-10-23 22:04:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:04:56,009 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-23 22:04:56,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:04:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-23 22:04:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 22:04:56,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:04:56,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:04:56,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:04:56,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:04:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:04:56,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2132410781, now seen corresponding path program 1 times [2020-10-23 22:04:56,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:04:56,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161384690] [2020-10-23 22:04:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:04:56,017 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:04:56,037 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-23 22:04:56,037 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 22:04:56,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:04:56,056 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-23 22:04:56,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:04:56 BoogieIcfgContainer [2020-10-23 22:04:56,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:04:56,060 INFO L168 Benchmark]: Toolchain (without parser) took 1746.24 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 102.3 MB in the beginning and 110.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:04:56,060 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:04:56,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.85 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:04:56,063 INFO L168 Benchmark]: Boogie Preprocessor took 64.54 ms. Allocated memory is still 125.8 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:04:56,064 INFO L168 Benchmark]: RCFGBuilder took 525.62 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 90.6 MB in the beginning and 150.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:04:56,068 INFO L168 Benchmark]: TraceAbstraction took 857.36 ms. Allocated memory is still 167.8 MB. Free memory was 149.7 MB in the beginning and 110.3 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:04:56,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.85 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.54 ms. Allocated memory is still 125.8 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 525.62 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 90.6 MB in the beginning and 150.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 857.36 ms. Allocated memory is still 167.8 MB. Free memory was 149.7 MB in the beginning and 110.3 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int z, a, k; [L23] int x, y, c; [L24] z = __VERIFIER_nondet_int() [L25] a = __VERIFIER_nondet_int() [L26] k = __VERIFIER_nondet_int() [L28] x = a [L29] y = 1 [L30] c = 1 [L32] COND TRUE 1 [L33] CALL __VERIFIER_assert(z*x - x + a - a*z*y == 0) [L15] COND TRUE !(cond) [L17] CALL reach_error() [L8] __assert_fail("0", "geo3.c", 8, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 31 SDslu, 4 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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: No data available, 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...