/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:46:38,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:46:38,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:46:38,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:46:38,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:46:38,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:46:38,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:46:38,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:46:38,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:46:38,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:46:38,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:46:38,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:46:38,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:46:38,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:46:38,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:46:38,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:46:38,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:46:38,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:46:38,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:46:38,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:46:38,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:46:38,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:46:38,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:46:38,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:46:38,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:46:38,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:46:38,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:46:38,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:46:38,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:46:38,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:46:38,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:46:38,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:46:38,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:46:38,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:46:38,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:46:38,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:46:38,985 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:46:38,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:46:38,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:46:38,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:46:38,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:46:38,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:46:38,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:46:38,988 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:46:39,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:46:39,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:46:39,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:46:39,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:46:39,312 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:46:39,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-08-22 19:46:39,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e3162e/ba3f5d17dd7f4e52966b0baa75a86df9/FLAG6824109cf [2020-08-22 19:46:39,851 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:46:39,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-08-22 19:46:39,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e3162e/ba3f5d17dd7f4e52966b0baa75a86df9/FLAG6824109cf [2020-08-22 19:46:40,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096e3162e/ba3f5d17dd7f4e52966b0baa75a86df9 [2020-08-22 19:46:40,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:46:40,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:46:40,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:46:40,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:46:40,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:46:40,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb44f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40, skipping insertion in model container [2020-08-22 19:46:40,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:46:40,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:46:40,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:46:40,451 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:46:40,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:46:40,485 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:46:40,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40 WrapperNode [2020-08-22 19:46:40,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:46:40,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:46:40,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:46:40,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:46:40,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (1/1) ... [2020-08-22 19:46:40,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:46:40,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:46:40,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:46:40,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:46:40,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (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 [2020-08-22 19:46:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:46:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:46:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:46:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:46:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:46:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:46:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:46:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:46:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:46:40,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:46:40,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 19:46:40,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:46:40 BoogieIcfgContainer [2020-08-22 19:46:40,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:46:40,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:46:40,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:46:40,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:46:40,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:46:40" (1/3) ... [2020-08-22 19:46:40,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b949b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:46:40, skipping insertion in model container [2020-08-22 19:46:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:46:40" (2/3) ... [2020-08-22 19:46:40,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b949b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:46:40, skipping insertion in model container [2020-08-22 19:46:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:46:40" (3/3) ... [2020-08-22 19:46:40,887 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-08-22 19:46:40,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:46:40,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:46:40,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:46:40,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:46:40,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:46:40,938 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:46:40,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:46:40,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:46:40,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:46:40,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:46:40,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:46:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-22 19:46:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 19:46:40,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:46:40,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:46:40,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:46:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:46:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times [2020-08-22 19:46:40,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:46:40,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681462196] [2020-08-22 19:46:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:46:41,035 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:46:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:46:41,537 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-08-22 19:46:41,800 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-08-22 19:46:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:46:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:46:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:46:41,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681462196] [2020-08-22 19:46:41,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:46:41,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:46:41,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991785098] [2020-08-22 19:46:41,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:46:41,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:46:41,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:46:41,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:46:41,887 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states. [2020-08-22 19:46:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:46:42,101 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-08-22 19:46:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:46:42,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-08-22 19:46:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:46:42,113 INFO L225 Difference]: With dead ends: 50 [2020-08-22 19:46:42,113 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 19:46:42,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:46:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 19:46:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-08-22 19:46:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 19:46:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-22 19:46:42,169 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 15 [2020-08-22 19:46:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:46:42,170 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-22 19:46:42,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:46:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-22 19:46:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 19:46:42,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:46:42,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:46:42,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:46:42,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:46:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:46:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1780540834, now seen corresponding path program 1 times [2020-08-22 19:46:42,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:46:42,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012116300] [2020-08-22 19:46:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:46:44,263 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:46:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:46:44,888 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-08-22 19:46:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:46:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:46:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 19:46:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:46:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:46:44,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012116300] [2020-08-22 19:46:44,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:46:44,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:46:44,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415460372] [2020-08-22 19:46:44,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:46:44,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:46:44,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:46:44,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:46:44,952 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-08-22 19:46:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:46:45,073 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-22 19:46:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:46:45,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-08-22 19:46:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:46:45,074 INFO L225 Difference]: With dead ends: 27 [2020-08-22 19:46:45,074 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 19:46:45,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:46:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 19:46:45,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 19:46:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 19:46:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 19:46:45,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-08-22 19:46:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:46:45,078 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 19:46:45,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:46:45,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 19:46:45,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 19:46:45,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:46:45,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 19:46:45,240 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,240 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,240 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,241 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,241 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,241 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 19:46:45,241 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-08-22 19:46:45,241 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 26) the Hoare annotation is: true [2020-08-22 19:46:45,242 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-08-22 19:46:45,242 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse2 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse2 main_~j~0) (<= .cse1 .cse0) (<= main_~j~0 .cse2))) [2020-08-22 19:46:45,242 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-08-22 19:46:45,242 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~j~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse3) (<= .cse3 .cse2))) [2020-08-22 19:46:45,243 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2020-08-22 19:46:45,243 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= main_~i~0 0) (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= 0 main_~i~0))) [2020-08-22 19:46:45,243 INFO L271 CegarLoopResult]: At program point L19-2(lines 13 26) the Hoare annotation is: true [2020-08-22 19:46:45,243 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~i~0 0) (<= 0 main_~i~0)) [2020-08-22 19:46:45,244 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-08-22 19:46:45,244 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:46:45,244 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:46:45,244 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:46:45,244 INFO L264 CegarLoopResult]: At program point L7-2(lines 5 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 19:46:45,245 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 19:46:45,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:46:45 BoogieIcfgContainer [2020-08-22 19:46:45,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:46:45,268 INFO L168 Benchmark]: Toolchain (without parser) took 5048.36 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 103.0 MB in the beginning and 133.3 MB in the end (delta: -30.3 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,269 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.97 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,271 INFO L168 Benchmark]: Boogie Preprocessor took 130.94 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.4 MB in the beginning and 182.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,272 INFO L168 Benchmark]: RCFGBuilder took 260.65 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 169.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,273 INFO L168 Benchmark]: TraceAbstraction took 4385.90 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 169.2 MB in the beginning and 133.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:46:45,277 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.97 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.94 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.4 MB in the beginning and 182.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 260.65 ms. Allocated memory is still 202.4 MB. Free memory was 182.3 MB in the beginning and 169.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4385.90 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 169.2 MB in the beginning and 133.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((2 * i <= j && j <= 2 * i) && 3 * i <= k) && k <= 3 * i - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 27 SDslu, 116 SDs, 0 SdLazy, 117 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=1, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 34 PreInvPairs, 53 NumberOfFragments, 181 HoareAnnotationTreeSize, 34 FomulaSimplifications, 243 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, 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 proved your program to be correct! Received shutdown request...