/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:26:45,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:26:45,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:26:45,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:26:45,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:26:45,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:26:45,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:26:45,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:26:45,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:26:45,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:26:45,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:26:45,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:26:45,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:26:45,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:26:45,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:26:45,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:26:45,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:26:45,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:26:45,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:26:45,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:26:45,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:26:45,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:26:45,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:26:45,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:26:45,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:26:45,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:26:45,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:26:45,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:26:45,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:26:45,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:26:45,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:26:45,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:26:45,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:26:45,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:26:45,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:26:45,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:26:45,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:26:45,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:26:45,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:26:45,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:26:45,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:26:45,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:26:45,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:26:45,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:26:45,314 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:26:45,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:26:45,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:26:45,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:45,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:26:45,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:26:45,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:26:45,315 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:26:45,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:26:45,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:26:45,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:26:45,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:26:45,641 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:26:45,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2020-07-17 17:26:45,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc903b8c/3a7e1879ef5944528da4332ae4affa7e/FLAG3fe1cff00 [2020-07-17 17:26:46,244 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:26:46,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2020-07-17 17:26:46,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc903b8c/3a7e1879ef5944528da4332ae4affa7e/FLAG3fe1cff00 [2020-07-17 17:26:46,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cc903b8c/3a7e1879ef5944528da4332ae4affa7e [2020-07-17 17:26:46,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:26:46,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:26:46,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:26:46,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:26:46,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:46,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122c3cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46, skipping insertion in model container [2020-07-17 17:26:46,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:46,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:26:46,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:26:46,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:46,830 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:26:46,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:46,865 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:26:46,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46 WrapperNode [2020-07-17 17:26:46,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:46,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:26:46,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:26:46,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:26:46,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:46,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:46,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:46,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:47,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:47,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:47,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... [2020-07-17 17:26:47,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:26:47,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:26:47,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:26:47,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:26:47,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:26:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:26:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-17 17:26:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:26:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:26:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 17:26:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:26:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:26:47,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:26:47,411 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:26:47,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:47 BoogieIcfgContainer [2020-07-17 17:26:47,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:26:47,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:26:47,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:26:47,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:26:47,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:26:46" (1/3) ... [2020-07-17 17:26:47,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0919ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:47, skipping insertion in model container [2020-07-17 17:26:47,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:46" (2/3) ... [2020-07-17 17:26:47,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0919ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:47, skipping insertion in model container [2020-07-17 17:26:47,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:47" (3/3) ... [2020-07-17 17:26:47,423 INFO L109 eAbstractionObserver]: Analyzing ICFG test09.c [2020-07-17 17:26:47,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:26:47,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:26:47,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:26:47,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:26:47,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:26:47,479 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:26:47,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:26:47,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:26:47,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:26:47,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:26:47,480 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:26:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-17 17:26:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 17:26:47,506 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:47,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:26:47,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:47,512 INFO L82 PathProgramCache]: Analyzing trace with hash 19454853, now seen corresponding path program 1 times [2020-07-17 17:26:47,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:47,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477346377] [2020-07-17 17:26:47,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:48,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477346377] [2020-07-17 17:26:48,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:48,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 17:26:48,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58172299] [2020-07-17 17:26:48,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 17:26:48,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:48,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 17:26:48,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:26:48,387 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 15 states. [2020-07-17 17:26:49,162 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-07-17 17:26:49,337 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-07-17 17:26:49,508 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-07-17 17:26:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:49,766 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-07-17 17:26:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 17:26:49,768 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-07-17 17:26:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:49,780 INFO L225 Difference]: With dead ends: 69 [2020-07-17 17:26:49,781 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 17:26:49,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-07-17 17:26:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 17:26:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-17 17:26:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 17:26:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2020-07-17 17:26:49,838 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 42 [2020-07-17 17:26:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:49,838 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2020-07-17 17:26:49,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 17:26:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2020-07-17 17:26:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 17:26:49,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:49,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:26:49,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:26:49,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:49,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1202217324, now seen corresponding path program 1 times [2020-07-17 17:26:49,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:49,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902707165] [2020-07-17 17:26:49,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:50,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902707165] [2020-07-17 17:26:50,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:50,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 17:26:50,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932900730] [2020-07-17 17:26:50,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:26:50,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:26:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:26:50,016 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand 7 states. [2020-07-17 17:26:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:50,173 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-07-17 17:26:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 17:26:50,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-07-17 17:26:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:50,174 INFO L225 Difference]: With dead ends: 44 [2020-07-17 17:26:50,174 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:26:50,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:26:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:26:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:26:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:26:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:26:50,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-07-17 17:26:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:50,179 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:26:50,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:26:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:26:50,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:26:50,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:26:50,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:26:51,120 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-07-17 17:26:51,223 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-07-17 17:26:51,342 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-07-17 17:26:52,039 INFO L264 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,040 INFO L264 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,040 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-07-17 17:26:52,040 INFO L264 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-07-17 17:26:52,041 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,041 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2020-07-17 17:26:52,041 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,041 INFO L264 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-07-17 17:26:52,041 INFO L264 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,042 INFO L264 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,042 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,042 INFO L264 CegarLoopResult]: At program point fFINAL(lines 7 15) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= ~p2~0.offset ~p1~0.offset) (<= f_~v~0 1) (<= 1 f_~v~0) (= ~p2~0.base ~p1~0.base)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,042 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (or (not (= ~p2~0.base |~#b~0.base|)) (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (= |~#a~0.base| ~p2~0.base) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= 1 (select |#valid| |~#a~0.base|))) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2020-07-17 17:26:52,043 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= ~p2~0.offset ~p1~0.offset) (<= f_~v~0 1) (<= 1 f_~v~0) (= ~p2~0.base ~p1~0.base)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,043 INFO L264 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (<= 1 f_~v~0)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,043 INFO L264 CegarLoopResult]: At program point L9(lines 9 14) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (<= 1 f_~v~0)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,043 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= |f_#t~mem0| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|))) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,044 INFO L264 CegarLoopResult]: At program point fEXIT(lines 7 15) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= ~p2~0.offset ~p1~0.offset) (<= f_~v~0 1) (<= 1 f_~v~0) (= ~p2~0.base ~p1~0.base)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,044 INFO L264 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= 1 |f_#t~mem1|) (= |f_#t~mem0| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|)))) [2020-07-17 17:26:52,044 INFO L264 CegarLoopResult]: At program point L8-2(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= |f_#t~mem0| |f_#t~mem2|) (= 1 |f_#t~mem1|) (= |f_#t~mem0| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|))) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,045 INFO L264 CegarLoopResult]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,045 INFO L264 CegarLoopResult]: At program point L8-3(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (<= 1 f_~v~0) (= |f_#t~mem0| |f_#t~mem2|) (= 1 |f_#t~mem1|) (= |f_#t~mem0| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|))) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,045 INFO L264 CegarLoopResult]: At program point L8-4(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (<= 1 f_~v~0)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,045 INFO L264 CegarLoopResult]: At program point L8-5(line 8) the Hoare annotation is: (or (not (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset))) (and (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (<= 1 f_~v~0)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~p2~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= 1 (select |#valid| |~#a~0.base|))) (= ~p2~0.base |~#a~0.base|) (not (= |old(~p1~0.offset)| |~#a~0.offset|))) [2020-07-17 17:26:52,046 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,046 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,046 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 17:26:52,046 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= 1 (select |#valid| |~#a~0.base|))) [2020-07-17 17:26:52,046 INFO L264 CegarLoopResult]: At program point L31(lines 31 33) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= 1000 |main_#t~mem6|) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base) (= 1000 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)))) [2020-07-17 17:26:52,047 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,047 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))) [2020-07-17 17:26:52,047 INFO L271 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: true [2020-07-17 17:26:52,047 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (or (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base) (= 1000 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,047 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,048 INFO L264 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))) [2020-07-17 17:26:52,048 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,048 INFO L264 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))) [2020-07-17 17:26:52,048 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 17 39) the Hoare annotation is: true [2020-07-17 17:26:52,048 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,049 INFO L264 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base))) [2020-07-17 17:26:52,049 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,049 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,049 INFO L264 CegarLoopResult]: At program point L25-3(line 25) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,049 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 17 39) the Hoare annotation is: true [2020-07-17 17:26:52,050 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,050 INFO L264 CegarLoopResult]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,050 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,050 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (and (= |old(~p2~0.offset)| ~p2~0.offset) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= ~p2~0.base |old(~p2~0.base)|)) (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|)))) [2020-07-17 17:26:52,051 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,051 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= 1 (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset)) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p2~0.offset |~#b~0.offset|))) [2020-07-17 17:26:52,051 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (= |~#b~0.base| |~#a~0.base|) (not (= 1 (select |#valid| |~#a~0.base|))) (and (= ~p1~0.offset |~#a~0.offset|) (= |~#a~0.base| ~p1~0.base))) [2020-07-17 17:26:52,051 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-07-17 17:26:52,073 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:52,074 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:52,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:26:52 BoogieIcfgContainer [2020-07-17 17:26:52,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:26:52,079 INFO L168 Benchmark]: Toolchain (without parser) took 5476.28 ms. Allocated memory was 136.8 MB in the beginning and 292.0 MB in the end (delta: 155.2 MB). Free memory was 100.6 MB in the beginning and 258.5 MB in the end (delta: -157.9 MB). Peak memory consumption was 163.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,080 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.67 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,082 INFO L168 Benchmark]: Boogie Preprocessor took 151.97 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 90.1 MB in the beginning and 180.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,083 INFO L168 Benchmark]: RCFGBuilder took 396.62 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 163.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,084 INFO L168 Benchmark]: TraceAbstraction took 4660.39 ms. Allocated memory was 201.9 MB in the beginning and 292.0 MB in the end (delta: 90.2 MB). Free memory was 162.4 MB in the beginning and 258.5 MB in the end (delta: -96.1 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:52,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.67 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.97 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 90.1 MB in the beginning and 180.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.62 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 163.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4660.39 ms. Allocated memory was 201.9 MB in the beginning and 292.0 MB in the end (delta: 90.2 MB). Free memory was 162.4 MB in the beginning and 258.5 MB in the end (delta: -96.1 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: 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: 17]: Loop Invariant Derived loop invariant: a == b || !(1 == \valid[a]) - ProcedureContractResult [Line: 7]: Procedure Contract for f [2020-07-17 17:26:52,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:52,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:52,101 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:52,101 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure f: ((((((!(1 == unknown-#memory_int-unknown[a := unknown-#memory_int-unknown[a][a := 5]][p2][p2]) || (((p2 == p1 && v <= 1) && 1 <= v) && p2 == p1)) || !(p2 == b)) || !(b == p2)) || !(\old(p1) == a)) || !(1 == \valid[a])) || p2 == a) || !(\old(p1) == a) - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 142 SDslu, 242 SDs, 0 SdLazy, 300 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 52 LocationsWithAnnotation, 52 PreInvPairs, 66 NumberOfFragments, 1388 HoareAnnotationTreeSize, 52 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 52 FomulaSimplificationsInter, 1108 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 25021 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...