/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/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:59:10,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:59:10,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:59:10,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:59:10,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:59:10,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:59:10,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:59:10,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:59:10,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:59:10,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:59:10,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:59:10,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:59:10,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:59:10,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:59:10,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:59:10,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:59:10,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:59:10,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:59:10,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:59:10,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:59:10,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:59:10,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:59:10,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:59:10,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:59:10,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:59:10,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:59:10,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:59:10,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:59:10,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:59:10,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:59:10,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:59:10,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:59:10,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:59:10,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:59:10,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:59:10,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:59:10,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:59:10,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:59:10,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:59:10,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:59:10,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:59:10,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:59:10,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:59:10,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:59:10,696 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:59:10,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:59:10,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:59:10,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:10,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:59:10,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:59:10,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:59:10,698 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:59:11,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:59:11,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:59:11,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:59:11,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:59:11,026 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:59:11,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2020-07-07 13:59:11,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9623c7f4e/9b6239d66bd54a4f9a90ed28bcfc0ddc/FLAGb344b69f0 [2020-07-07 13:59:11,558 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:59:11,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2020-07-07 13:59:11,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9623c7f4e/9b6239d66bd54a4f9a90ed28bcfc0ddc/FLAGb344b69f0 [2020-07-07 13:59:11,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9623c7f4e/9b6239d66bd54a4f9a90ed28bcfc0ddc [2020-07-07 13:59:11,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:59:11,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:59:11,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:11,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:59:11,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:59:11,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:11" (1/1) ... [2020-07-07 13:59:11,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ef63e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:11, skipping insertion in model container [2020-07-07 13:59:11,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:11" (1/1) ... [2020-07-07 13:59:11,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:59:11,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:59:12,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:12,156 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:59:12,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:12,185 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:59:12,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12 WrapperNode [2020-07-07 13:59:12,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:12,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:59:12,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:59:12,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:59:12,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (1/1) ... [2020-07-07 13:59:12,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:59:12,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:59:12,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:59:12,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:59:12,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (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 [2020-07-07 13:59:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:59:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:59:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:59:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-07 13:59:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:59:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:59:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:59:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 13:59:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:59:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-07 13:59:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:59:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:59:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:59:12,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:59:12,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:59:12,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:12 BoogieIcfgContainer [2020-07-07 13:59:12,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:59:12,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:59:12,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:59:12,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:59:12,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:59:11" (1/3) ... [2020-07-07 13:59:12,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a11b11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:12, skipping insertion in model container [2020-07-07 13:59:12,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:12" (2/3) ... [2020-07-07 13:59:12,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a11b11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:12, skipping insertion in model container [2020-07-07 13:59:12,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:12" (3/3) ... [2020-07-07 13:59:12,566 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2020-07-07 13:59:12,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:59:12,590 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:59:12,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:59:12,646 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:59:12,647 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:59:12,647 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:59:12,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:59:12,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:59:12,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:59:12,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:59:12,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:59:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 13:59:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 13:59:12,685 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:12,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:12,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1010422485, now seen corresponding path program 1 times [2020-07-07 13:59:12,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:12,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709780785] [2020-07-07 13:59:12,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:12,871 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:12,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709780785] [2020-07-07 13:59:12,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:12,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:59:12,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110480261] [2020-07-07 13:59:12,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:59:12,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:12,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:59:12,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:59:12,906 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-07-07 13:59:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:12,984 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-07-07 13:59:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:59:12,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-07 13:59:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:12,998 INFO L225 Difference]: With dead ends: 41 [2020-07-07 13:59:12,998 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 13:59:13,002 INFO L675 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 [2020-07-07 13:59:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 13:59:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-07 13:59:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-07 13:59:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-07 13:59:13,058 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2020-07-07 13:59:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:13,058 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-07 13:59:13,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:59:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-07 13:59:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 13:59:13,060 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:13,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:13,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:59:13,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:13,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:13,061 INFO L82 PathProgramCache]: Analyzing trace with hash 997493191, now seen corresponding path program 1 times [2020-07-07 13:59:13,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:13,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935755443] [2020-07-07 13:59:13,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:13,160 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:13,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935755443] [2020-07-07 13:59:13,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:13,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:59:13,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733639025] [2020-07-07 13:59:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:59:13,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:13,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:59:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:59:13,165 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-07-07 13:59:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:13,252 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-07 13:59:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:59:13,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-07 13:59:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:13,253 INFO L225 Difference]: With dead ends: 24 [2020-07-07 13:59:13,254 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:59:13,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:59:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:59:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:59:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:59:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:59:13,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-07 13:59:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:13,257 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:59:13,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:59:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:59:13,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:59:13,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:59:13,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:59:13,428 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-07 13:59:13,429 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-07 13:59:13,429 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-07 13:59:13,429 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-07 13:59:13,429 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-07 13:59:13,430 INFO L271 CegarLoopResult]: At program point fooEXIT(lines 15 17) the Hoare annotation is: true [2020-07-07 13:59:13,430 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 15 17) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-07 13:59:13,430 INFO L271 CegarLoopResult]: At program point fooFINAL(lines 15 17) the Hoare annotation is: true [2020-07-07 13:59:13,430 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:59:13,430 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-07 13:59:13,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:59:13,431 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:59:13,431 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 19 27) the Hoare annotation is: true [2020-07-07 13:59:13,431 INFO L271 CegarLoopResult]: At program point L23(lines 23 24) the Hoare annotation is: true [2020-07-07 13:59:13,431 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-07-07 13:59:13,432 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2020-07-07 13:59:13,432 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 19 27) the Hoare annotation is: true [2020-07-07 13:59:13,432 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (= ~x~0 |old(~x~0)|)) [2020-07-07 13:59:13,432 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-07-07 13:59:13,432 INFO L271 CegarLoopResult]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2020-07-07 13:59:13,433 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-07 13:59:13,433 INFO L271 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-07-07 13:59:13,433 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (= ~x~0 |old(~x~0)|)) [2020-07-07 13:59:13,433 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-07-07 13:59:13,434 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-07 13:59:13,434 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: true [2020-07-07 13:59:13,434 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (<= ~x~0 0))) [2020-07-07 13:59:13,434 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond)) (not (<= ~x~0 0))) [2020-07-07 13:59:13,435 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (<= ~x~0 0))) [2020-07-07 13:59:13,435 INFO L271 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2020-07-07 13:59:13,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:59:13 BoogieIcfgContainer [2020-07-07 13:59:13,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:59:13,451 INFO L168 Benchmark]: Toolchain (without parser) took 1485.37 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.5 MB in the beginning and 113.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,452 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.60 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,455 INFO L168 Benchmark]: Boogie Preprocessor took 120.38 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 182.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,456 INFO L168 Benchmark]: RCFGBuilder took 250.86 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,456 INFO L168 Benchmark]: TraceAbstraction took 889.65 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 113.8 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:13,460 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.60 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.38 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 182.0 MB in the end (delta: -90.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 250.86 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 169.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 889.65 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 113.8 MB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 21]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for foo Derived contract for procedure foo: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 17 SDslu, 79 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 41 PreInvPairs, 48 NumberOfFragments, 88 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...