/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/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:18:46,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:18:46,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:18:46,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:18:46,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:18:46,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:18:46,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:18:46,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:18:46,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:18:46,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:18:46,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:18:46,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:18:46,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:18:46,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:18:46,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:18:46,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:18:46,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:18:46,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:18:46,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:18:46,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:18:46,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:18:46,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:18:46,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:18:46,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:18:46,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:18:46,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:18:46,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:18:46,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:18:46,370 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 [2020-07-07 11:18:46,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:18:46,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:18:46,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:18:46,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:18:46,386 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:18:46,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:18:46,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:18:46,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:18:46,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:18:46,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:18:46,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:18:46,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:18:46,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:18:46,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:18:46,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:18:46,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:18:46,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:18:46,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:18:46,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:18:46,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:18:46,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:18:46,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:18:46,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:18:46,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:18:46,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:18:46,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:18:46,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:18:46,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:18:46,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:18:46,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:18:46,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:18:46,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:18:46,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:18:46,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:18:46,686 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:18:46,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-07-07 11:18:46,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e4c6e4c/f9f65ec12357422293a9a3353f8cd3d7/FLAG462ac4fa8 [2020-07-07 11:18:47,232 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:18:47,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-07-07 11:18:47,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e4c6e4c/f9f65ec12357422293a9a3353f8cd3d7/FLAG462ac4fa8 [2020-07-07 11:18:47,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e4c6e4c/f9f65ec12357422293a9a3353f8cd3d7 [2020-07-07 11:18:47,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:18:47,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:18:47,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:18:47,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:18:47,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:18:47,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:47,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7467a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47, skipping insertion in model container [2020-07-07 11:18:47,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:47,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:18:47,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:18:47,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:18:47,862 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:18:47,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:18:47,980 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:18:47,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47 WrapperNode [2020-07-07 11:18:47,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:18:47,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:18:47,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:18:47,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:18:47,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:47,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (1/1) ... [2020-07-07 11:18:48,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:18:48,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:18:48,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:18:48,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:18:48,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (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 11:18:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:18:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:18:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-07 11:18:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:18:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:18:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:18:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:18:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:18:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:18:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:18:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:18:48,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:18:48,379 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:18:48,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:18:48 BoogieIcfgContainer [2020-07-07 11:18:48,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:18:48,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:18:48,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:18:48,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:18:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:18:47" (1/3) ... [2020-07-07 11:18:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3e6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:18:48, skipping insertion in model container [2020-07-07 11:18:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:18:47" (2/3) ... [2020-07-07 11:18:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3e6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:18:48, skipping insertion in model container [2020-07-07 11:18:48,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:18:48" (3/3) ... [2020-07-07 11:18:48,410 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-07-07 11:18:48,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:18:48,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:18:48,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:18:48,492 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:18:48,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:18:48,492 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:18:48,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:18:48,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:18:48,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:18:48,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:18:48,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:18:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-07 11:18:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:18:48,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:48,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:48,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash -899836778, now seen corresponding path program 1 times [2020-07-07 11:18:48,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:48,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251780054] [2020-07-07 11:18:48,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:48,769 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 11:18:48,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251780054] [2020-07-07 11:18:48,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:48,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:18:48,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126878413] [2020-07-07 11:18:48,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:18:48,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:48,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:18:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:18:48,796 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-07-07 11:18:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:48,922 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-07-07 11:18:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:18:48,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:18:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:48,935 INFO L225 Difference]: With dead ends: 42 [2020-07-07 11:18:48,935 INFO L226 Difference]: Without dead ends: 20 [2020-07-07 11:18:48,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 11:18:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-07 11:18:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-07 11:18:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 11:18:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-07 11:18:48,978 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-07-07 11:18:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:48,978 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-07 11:18:48,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:18:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-07 11:18:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:18:48,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:48,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:48,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:18:48,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:48,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1137678901, now seen corresponding path program 1 times [2020-07-07 11:18:48,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:48,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890615452] [2020-07-07 11:18:48,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,081 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 11:18:49,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890615452] [2020-07-07 11:18:49,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:18:49,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:18:49,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010088421] [2020-07-07 11:18:49,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:18:49,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:49,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:18:49,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:18:49,085 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2020-07-07 11:18:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:49,160 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-07-07 11:18:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:18:49,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-07-07 11:18:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:49,161 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:18:49,162 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:18:49,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:18:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:18:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-07-07 11:18:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 11:18:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-07 11:18:49,170 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2020-07-07 11:18:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:49,170 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-07 11:18:49,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:18:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-07 11:18:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:18:49,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:49,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:49,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:18:49,172 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash 278779309, now seen corresponding path program 1 times [2020-07-07 11:18:49,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:49,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939440148] [2020-07-07 11:18:49,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:49,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939440148] [2020-07-07 11:18:49,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769802974] [2020-07-07 11:18:49,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,338 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:18:49,344 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:49,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:18:49,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-07-07 11:18:49,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021775131] [2020-07-07 11:18:49,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:18:49,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:49,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:18:49,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:18:49,386 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2020-07-07 11:18:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:49,483 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-07-07 11:18:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:18:49,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-07 11:18:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:49,485 INFO L225 Difference]: With dead ends: 36 [2020-07-07 11:18:49,485 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 11:18:49,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:18:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 11:18:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-07-07 11:18:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 11:18:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-07 11:18:49,497 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2020-07-07 11:18:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:49,497 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-07 11:18:49,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:18:49,498 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-07 11:18:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:18:49,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:49,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:49,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:18:49,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash -9513713, now seen corresponding path program 2 times [2020-07-07 11:18:49,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:49,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115450045] [2020-07-07 11:18:49,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:18:49,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115450045] [2020-07-07 11:18:49,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44555620] [2020-07-07 11:18:49,826 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:49,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-07-07 11:18:49,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:18:49,890 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-07 11:18:49,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:50,001 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-07 11:18:50,008 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:18:50,009 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2020-07-07 11:18:50,010 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:18:50,017 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:18:50,019 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:18:50,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2020-07-07 11:18:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 11:18:50,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:18:50,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-07-07 11:18:50,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066423937] [2020-07-07 11:18:50,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:18:50,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:50,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:18:50,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:18:50,040 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-07-07 11:18:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:50,109 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-07 11:18:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:18:50,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-07 11:18:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:50,111 INFO L225 Difference]: With dead ends: 33 [2020-07-07 11:18:50,111 INFO L226 Difference]: Without dead ends: 25 [2020-07-07 11:18:50,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:18:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-07 11:18:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-07 11:18:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 11:18:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-07-07 11:18:50,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2020-07-07 11:18:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:50,118 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-07-07 11:18:50,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:18:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-07 11:18:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:18:50,119 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:50,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:50,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:50,335 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash -413303094, now seen corresponding path program 1 times [2020-07-07 11:18:50,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:50,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585436915] [2020-07-07 11:18:50,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:18:50,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585436915] [2020-07-07 11:18:50,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768008185] [2020-07-07 11:18:50,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,513 INFO L264 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-07 11:18:50,515 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:18:50,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:18:50,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-07 11:18:50,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601652165] [2020-07-07 11:18:50,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:18:50,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:18:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:18:50,532 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-07-07 11:18:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:50,605 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-07-07 11:18:50,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:18:50,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-07 11:18:50,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:50,606 INFO L225 Difference]: With dead ends: 42 [2020-07-07 11:18:50,607 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 11:18:50,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:18:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 11:18:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-07 11:18:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:18:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-07 11:18:50,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2020-07-07 11:18:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:50,613 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-07 11:18:50,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:18:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-07 11:18:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:18:50,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:50,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:50,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:50,828 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash -50594516, now seen corresponding path program 2 times [2020-07-07 11:18:50,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:50,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141432698] [2020-07-07 11:18:50,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:18:50,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141432698] [2020-07-07 11:18:50,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734095521] [2020-07-07 11:18:50,900 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:50,963 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:18:50,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:18:50,966 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:18:50,968 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:18:50,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:18:50,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-07 11:18:50,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81172195] [2020-07-07 11:18:50,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:18:50,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:50,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:18:50,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:18:50,993 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2020-07-07 11:18:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:51,074 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-07-07 11:18:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:18:51,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-07 11:18:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:51,076 INFO L225 Difference]: With dead ends: 44 [2020-07-07 11:18:51,076 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:18:51,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:18:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:18:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-07 11:18:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:18:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-07 11:18:51,083 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2020-07-07 11:18:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:51,083 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-07 11:18:51,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:18:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-07 11:18:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 11:18:51,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:18:51,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:18:51,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:51,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:18:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:18:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash 619997966, now seen corresponding path program 3 times [2020-07-07 11:18:51,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:18:51,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536677190] [2020-07-07 11:18:51,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:18:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:18:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 11:18:51,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536677190] [2020-07-07 11:18:51,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858032269] [2020-07-07 11:18:51,422 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:18:51,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:18:51,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:18:51,503 INFO L264 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-07 11:18:51,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:18:51,543 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-07-07 11:18:51,543 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:18:51,555 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:18:51,560 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-07 11:18:51,560 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:18:51,572 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:18:51,574 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:18:51,574 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:43, output treesize:17 [2020-07-07 11:18:51,712 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:18:51,716 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-07 11:18:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-07 11:18:51,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:18:51,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-07-07 11:18:51,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052362513] [2020-07-07 11:18:51,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:18:51,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:18:51,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:18:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:18:51,740 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2020-07-07 11:18:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:18:52,039 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-07-07 11:18:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 11:18:52,039 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-07-07 11:18:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:18:52,040 INFO L225 Difference]: With dead ends: 44 [2020-07-07 11:18:52,040 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:18:52,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:18:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:18:52,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:18:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:18:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:18:52,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-07-07 11:18:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:18:52,042 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:18:52,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:18:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:18:52,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:18:52,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:18:52,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:18:52,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:18:52,328 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-07 11:18:52,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:18:52,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:18:52,329 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:18:52,329 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:18:52,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:18:52,329 INFO L264 CegarLoopResult]: At program point L37-4(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse2 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (let ((.cse1 (select (select |#memory_int| .cse0) .cse2))) (and (= main_~pa~0.base .cse0) (<= .cse1 main_~i~0) (<= main_~i~0 .cse1) (= .cse2 main_~pa~0.offset)))) [2020-07-07 11:18:52,330 INFO L268 CegarLoopResult]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2020-07-07 11:18:52,330 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2020-07-07 11:18:52,330 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2020-07-07 11:18:52,330 INFO L268 CegarLoopResult]: For program point L27-4(lines 21 50) no Hoare annotation was computed. [2020-07-07 11:18:52,335 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2020-07-07 11:18:52,335 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-07 11:18:52,335 INFO L268 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-07-07 11:18:52,336 INFO L268 CegarLoopResult]: For program point L32(lines 32 44) no Hoare annotation was computed. [2020-07-07 11:18:52,336 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-07-07 11:18:52,336 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 50) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-07 11:18:52,336 INFO L264 CegarLoopResult]: At program point L41(lines 21 50) the Hoare annotation is: false [2020-07-07 11:18:52,336 INFO L268 CegarLoopResult]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2020-07-07 11:18:52,336 INFO L268 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-07-07 11:18:52,337 INFO L264 CegarLoopResult]: At program point L37-3(lines 37 39) the Hoare annotation is: (and (= main_~pa~0.base (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4) main_~pa~0.offset)) [2020-07-07 11:18:52,337 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2020-07-07 11:18:52,337 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2020-07-07 11:18:52,337 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2020-07-07 11:18:52,349 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-07 11:18:52,353 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-07 11:18:52,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:18:52,355 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,357 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-07 11:18:52,357 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-07 11:18:52,357 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,358 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:18:52,358 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:18:52 BoogieIcfgContainer [2020-07-07 11:18:52,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:18:52,362 INFO L168 Benchmark]: Toolchain (without parser) took 4721.00 ms. Allocated memory was 138.4 MB in the beginning and 245.9 MB in the end (delta: 107.5 MB). Free memory was 102.7 MB in the beginning and 136.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,363 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.83 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 180.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,365 INFO L168 Benchmark]: Boogie Preprocessor took 42.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,366 INFO L168 Benchmark]: RCFGBuilder took 358.73 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,367 INFO L168 Benchmark]: TraceAbstraction took 3976.58 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 160.0 MB in the beginning and 136.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:18:52,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.83 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 180.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.73 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 160.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3976.58 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 160.0 MB in the beginning and 136.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 37]: Loop Invariant [2020-07-07 11:18:52,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-07 11:18:52,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-07 11:18:52,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:18:52,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,380 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-07-07 11:18:52,381 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-07-07 11:18:52,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-07-07 11:18:52,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-07 11:18:52,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (pa == #memory_$Pointer$[cont][cont] && i <= unknown-#memory_int-unknown[pa][pa]) && #memory_$Pointer$[cont][cont] + 4 == pa - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 33 SDslu, 259 SDs, 0 SdLazy, 339 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=6, 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, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 24 NumberOfFragments, 93 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 275 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 263 ConstructedInterpolants, 1 QuantifiedInterpolants, 15731 SizeOfPredicates, 28 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 31/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...