/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:17:13,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:17:13,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:17:13,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:17:13,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:17:13,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:17:13,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:17:13,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:17:13,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:17:13,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:17:13,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:17:13,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:17:13,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:17:13,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:17:13,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:17:13,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:17:13,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:17:13,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:17:13,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:17:13,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:17:13,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:17:13,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:17:13,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:17:13,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:17:13,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:17:13,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:17:13,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:17:13,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:17:13,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:17:13,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:17:13,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:17:13,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:17:13,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:17:13,920 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:17:13,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:17:13,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:17:13,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:17:13,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:17:13,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:17:13,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:17:13,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:17:13,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:17:13,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:17:13,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:17:13,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:17:13,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:17:13,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:17:13,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:17:13,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:17:13,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:17:13,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:17:13,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:17:13,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:17:13,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:17:13,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:17:13,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:17:13,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:17:13,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:17:13,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:17:14,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:17:14,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:17:14,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:17:14,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:17:14,241 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:17:14,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-17 12:17:14,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecbae7ada/e1dd4fc5726d4f3fb9195b27b08d01c7/FLAG7dd4579dd [2020-07-17 12:17:14,767 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:17:14,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-17 12:17:14,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecbae7ada/e1dd4fc5726d4f3fb9195b27b08d01c7/FLAG7dd4579dd [2020-07-17 12:17:15,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecbae7ada/e1dd4fc5726d4f3fb9195b27b08d01c7 [2020-07-17 12:17:15,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:17:15,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:17:15,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:17:15,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:17:15,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:17:15,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430027b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15, skipping insertion in model container [2020-07-17 12:17:15,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:17:15,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:17:15,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:17:15,445 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:17:15,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:17:15,476 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:17:15,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15 WrapperNode [2020-07-17 12:17:15,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:17:15,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:17:15,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:17:15,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:17:15,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (1/1) ... [2020-07-17 12:17:15,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:17:15,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:17:15,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:17:15,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:17:15,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (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 [2020-07-17 12:17:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:17:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:17:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:17:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:17:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 12:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:17:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:17:15,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:17:15,868 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:17:15,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:17:15 BoogieIcfgContainer [2020-07-17 12:17:15,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:17:15,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:17:15,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:17:15,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:17:15,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:17:15" (1/3) ... [2020-07-17 12:17:15,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54024cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:17:15, skipping insertion in model container [2020-07-17 12:17:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:15" (2/3) ... [2020-07-17 12:17:15,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54024cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:17:15, skipping insertion in model container [2020-07-17 12:17:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:17:15" (3/3) ... [2020-07-17 12:17:15,881 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-07-17 12:17:15,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:17:15,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:17:15,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:17:15,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:17:15,945 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:17:15,946 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:17:15,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:17:15,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:17:15,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:17:15,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:17:15,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:17:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 12:17:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:17:15,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:15,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:15,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-17 12:17:16,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:16,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605843649] [2020-07-17 12:17:16,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:17:16,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605843649] [2020-07-17 12:17:16,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:17:16,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 12:17:16,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617223164] [2020-07-17 12:17:16,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 12:17:16,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:16,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 12:17:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:17:16,175 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-17 12:17:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:16,209 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-17 12:17:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 12:17:16,211 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 12:17:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:16,219 INFO L225 Difference]: With dead ends: 31 [2020-07-17 12:17:16,219 INFO L226 Difference]: Without dead ends: 12 [2020-07-17 12:17:16,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:17:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-17 12:17:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-17 12:17:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 12:17:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-17 12:17:16,274 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-17 12:17:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:16,275 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-17 12:17:16,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 12:17:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-17 12:17:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:17:16,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:16,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:16,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:17:16,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-17 12:17:16,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:16,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137703135] [2020-07-17 12:17:16,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:16,418 ERROR L253 erpolLogProxyWrapper]: Interpolant 2 not inductive [2020-07-17 12:17:16,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:17:16,421 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 12:17:16,426 INFO L168 Benchmark]: Toolchain (without parser) took 1241.52 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 103.7 MB in the beginning and 147.4 MB in the end (delta: -43.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,427 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.82 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,429 INFO L168 Benchmark]: Boogie Preprocessor took 110.32 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 182.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,430 INFO L168 Benchmark]: RCFGBuilder took 284.51 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 169.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,431 INFO L168 Benchmark]: TraceAbstraction took 549.80 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 147.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:17:16,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.82 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.32 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 182.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.51 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 169.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 549.80 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 147.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...