/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:30:13,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:30:13,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:30:13,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:30:13,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:30:13,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:30:13,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:30:13,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:30:13,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:30:13,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:30:13,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:30:13,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:30:13,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:30:13,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:30:13,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:30:13,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:30:13,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:30:13,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:30:13,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:30:13,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:30:13,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:30:13,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:30:13,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:30:13,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:30:13,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:30:13,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:30:13,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:30:13,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:30:13,271 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 [2020-07-20 11:30:13,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:30:13,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:30:13,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:30:13,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:30:13,288 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:30:13,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:30:13,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:30:13,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:30:13,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:30:13,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:30:13,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:30:13,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:30:13,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:30:13,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:30:13,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:30:13,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:30:13,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:30:13,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:30:13,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:30:13,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:30:13,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:30:13,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:30:13,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:30:13,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:30:13,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:30:13,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:30:13,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:13,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:30:13,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:30:13,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:30:13,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:30:13,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:30:13,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:30:13,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:30:13,623 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:30:13,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2020-07-20 11:30:13,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73a062dd/2734d3a1f7514bbca1ddb66f171739d9/FLAG06b8037eb [2020-07-20 11:30:14,211 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:30:14,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c [2020-07-20 11:30:14,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73a062dd/2734d3a1f7514bbca1ddb66f171739d9/FLAG06b8037eb [2020-07-20 11:30:14,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73a062dd/2734d3a1f7514bbca1ddb66f171739d9 [2020-07-20 11:30:14,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:30:14,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:30:14,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:14,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:30:14,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:30:14,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34800825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14, skipping insertion in model container [2020-07-20 11:30:14,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:30:14,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:30:14,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:14,827 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:30:14,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:14,855 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:30:14,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14 WrapperNode [2020-07-20 11:30:14,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:14,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:30:14,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:30:14,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:30:14,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (1/1) ... [2020-07-20 11:30:14,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:30:14,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:30:14,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:30:14,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:30:14,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (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 [2020-07-20 11:30:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:30:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:30:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-20 11:30:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:30:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:30:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-20 11:30:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:30:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:30:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:30:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:30:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:30:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:30:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:30:15,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:30:15,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:30:15,281 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:30:15,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:15 BoogieIcfgContainer [2020-07-20 11:30:15,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:30:15,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:30:15,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:30:15,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:30:15,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:30:14" (1/3) ... [2020-07-20 11:30:15,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9a494a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:15, skipping insertion in model container [2020-07-20 11:30:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:14" (2/3) ... [2020-07-20 11:30:15,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9a494a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:15, skipping insertion in model container [2020-07-20 11:30:15,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:15" (3/3) ... [2020-07-20 11:30:15,323 INFO L109 eAbstractionObserver]: Analyzing ICFG test16.c [2020-07-20 11:30:15,356 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:30:15,373 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:30:15,397 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:30:15,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:30:15,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:30:15,424 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:30:15,424 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:30:15,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:30:15,424 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:30:15,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:30:15,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:30:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 11:30:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 11:30:15,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:15,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:30:15,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:15,463 INFO L82 PathProgramCache]: Analyzing trace with hash 390654600, now seen corresponding path program 1 times [2020-07-20 11:30:15,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:15,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032129036] [2020-07-20 11:30:15,472 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:30:15,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 11:30:15,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:30:15,660 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2020-07-20 11:30:15,665 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 11:30:15,693 INFO L624 ElimStorePlain]: treesize reduction 14, result has 22.2 percent of original size [2020-07-20 11:30:15,694 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:30:15,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-07-20 11:30:15,727 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 15 [2020-07-20 11:30:15,728 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:30:15,745 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:30:15,746 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:30:15,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:19 [2020-07-20 11:30:15,808 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-07-20 11:30:15,810 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:30:15,819 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:30:15,820 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:30:15,821 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:33, output treesize:7 [2020-07-20 11:30:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:30:15,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:30:15,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032129036] [2020-07-20 11:30:15,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:30:15,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:30:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560713412] [2020-07-20 11:30:15,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:30:15,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:30:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:30:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:30:15,864 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-07-20 11:30:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:30:15,990 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-20 11:30:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:30:15,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-20 11:30:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:30:16,002 INFO L225 Difference]: With dead ends: 25 [2020-07-20 11:30:16,002 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:30:16,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:30:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:30:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:30:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:30:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:30:16,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-20 11:30:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:30:16,039 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:30:16,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:30:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:30:16,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:30:16,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:16,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:30:16,386 INFO L268 CegarLoopResult]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-20 11:30:16,386 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-20 11:30:16,387 INFO L268 CegarLoopResult]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-20 11:30:16,387 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= 1 (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= 1 (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (= |~#a~0.base| |~#b~0.base|) (not (= (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|) 1)) (= |equal_#in~a.base| |equal_#in~b.base|) (not (= 1 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|)))) [2020-07-20 11:30:16,387 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-20 11:30:16,388 INFO L268 CegarLoopResult]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-20 11:30:16,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:16,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:16,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:16,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:16,389 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2020-07-20 11:30:16,389 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:16,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:16,389 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 28) the Hoare annotation is: true [2020-07-20 11:30:16,389 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 28) no Hoare annotation was computed. [2020-07-20 11:30:16,390 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|)) (= 1 (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (= |~#b~0.base| |~#a~0.base|)) [2020-07-20 11:30:16,390 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-07-20 11:30:16,390 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 28) no Hoare annotation was computed. [2020-07-20 11:30:16,403 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,404 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,412 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:30:16 BoogieIcfgContainer [2020-07-20 11:30:16,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:30:16,419 INFO L168 Benchmark]: Toolchain (without parser) took 1813.83 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 103.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:16,420 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:30:16,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:16,423 INFO L168 Benchmark]: Boogie Preprocessor took 122.72 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:16,424 INFO L168 Benchmark]: RCFGBuilder took 308.19 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 165.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:16,425 INFO L168 Benchmark]: TraceAbstraction took 1126.61 ms. Allocated memory is still 201.3 MB. Free memory was 164.6 MB in the beginning and 103.1 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:16,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 137.4 MB. Free memory was 100.8 MB in the beginning and 90.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.72 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.19 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 165.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1126.61 ms. Allocated memory is still 201.3 MB. Free memory was 164.6 MB in the beginning and 103.1 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - 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: 10]: 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: 4]: Loop Invariant [2020-07-20 11:30:16,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,441 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,441 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,442 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,442 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,443 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 11:30:16,443 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((!(1 == unknown-#memory_int-unknown[a][a]) || !(1 == unknown-#memory_int-unknown[b][b])) || a == b) || !(unknown-#memory_int-unknown[b][b] == 1)) || a == b) || !(1 == unknown-#memory_int-unknown[a][a]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 10 SDslu, 21 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 66 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 567 SizeOfPredicates, 17 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...