/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:19:17,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:19:17,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:19:17,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:19:17,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:19:17,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:19:17,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:19:17,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:19:17,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:19:17,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:19:17,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:19:17,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:19:17,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:19:17,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:19:17,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:19:17,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:19:17,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:19:17,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:19:17,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:19:17,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:19:17,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:19:17,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:19:17,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:19:17,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:19:17,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:19:17,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:19:17,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:19:17,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:19:17,313 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 [2020-07-21 16:19:17,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:19:17,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:19:17,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:19:17,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:19:17,358 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:19:17,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:19:17,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:19:17,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:19:17,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:19:17,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:19:17,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:19:17,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:19:17,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:19:17,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:19:17,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:19:17,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:19:17,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:19:17,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:19:17,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:19:17,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:19:17,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:19:17,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:17,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:19:17,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:19:17,367 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:19:17,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:19:17,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:19:17,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:19:17,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:19:17,717 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:19:17,718 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test03.c [2020-07-21 16:19:17,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b31c17/0d5e69db0d23428996902b8859465130/FLAG0f0a355df [2020-07-21 16:19:18,246 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:19:18,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test03.c [2020-07-21 16:19:18,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b31c17/0d5e69db0d23428996902b8859465130/FLAG0f0a355df [2020-07-21 16:19:18,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83b31c17/0d5e69db0d23428996902b8859465130 [2020-07-21 16:19:18,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:19:18,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:19:18,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:19:18,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:19:18,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:19:18,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:19:18" (1/1) ... [2020-07-21 16:19:18,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e11f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:18, skipping insertion in model container [2020-07-21 16:19:18,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:19:18" (1/1) ... [2020-07-21 16:19:18,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:19:18,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:19:18,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:19:18,951 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:19:18,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:19:19,003 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:19:19,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19 WrapperNode [2020-07-21 16:19:19,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:19:19,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:19:19,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:19:19,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:19:19,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (1/1) ... [2020-07-21 16:19:19,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:19:19,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:19:19,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:19:19,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:19:19,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (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 [2020-07-21 16:19:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:19:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:19:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-21 16:19:19,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:19:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:19:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:19:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:19:19,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:19:19,427 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:19:19,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:19:19 BoogieIcfgContainer [2020-07-21 16:19:19,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:19:19,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:19:19,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:19:19,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:19:19,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:19:18" (1/3) ... [2020-07-21 16:19:19,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db028be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:19:19, skipping insertion in model container [2020-07-21 16:19:19,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:19:19" (2/3) ... [2020-07-21 16:19:19,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db028be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:19:19, skipping insertion in model container [2020-07-21 16:19:19,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:19:19" (3/3) ... [2020-07-21 16:19:19,440 INFO L109 eAbstractionObserver]: Analyzing ICFG test03.c [2020-07-21 16:19:19,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:19:19,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:19:19,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:19:19,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:19:19,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:19:19,497 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:19:19,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:19:19,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:19:19,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:19:19,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:19:19,498 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:19:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 16:19:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 16:19:19,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:19:19,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:19:19,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:19:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:19:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1498735640, now seen corresponding path program 1 times [2020-07-21 16:19:19,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:19:19,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527790957] [2020-07-21 16:19:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:19:19,649 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:19:19,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:19:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 16:19:19,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:19:19,764 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 10 treesize of output 8 [2020-07-21 16:19:19,767 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:19:19,782 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:19:19,783 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:19:19,784 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-07-21 16:19:19,848 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:19:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:19:19,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:19:19,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527790957] [2020-07-21 16:19:19,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:19:19,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:19:19,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150482216] [2020-07-21 16:19:19,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:19:19,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:19:19,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:19:19,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:19:19,913 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-07-21 16:19:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:19:20,026 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-07-21 16:19:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:19:20,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-21 16:19:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:19:20,036 INFO L225 Difference]: With dead ends: 22 [2020-07-21 16:19:20,037 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:19:20,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:19:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:19:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:19:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:19:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:19:20,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-21 16:19:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:19:20,064 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:19:20,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:19:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:19:20,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:19:20,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:19:20,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:19:20,339 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:19:20,340 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:19:20,340 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:19:20,340 INFO L268 CegarLoopResult]: For program point fEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 16:19:20,340 INFO L271 CegarLoopResult]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2020-07-21 16:19:20,340 INFO L268 CegarLoopResult]: For program point fFINAL(lines 4 6) no Hoare annotation was computed. [2020-07-21 16:19:20,341 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:19:20,341 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:19:20,341 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:19:20,341 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:19:20,341 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-21 16:19:20,342 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-07-21 16:19:20,342 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2020-07-21 16:19:20,342 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2020-07-21 16:19:20,342 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2020-07-21 16:19:20,343 INFO L264 CegarLoopResult]: At program point L21(lines 10 28) the Hoare annotation is: false [2020-07-21 16:19:20,343 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-07-21 16:19:20,343 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= main_~p1~0.base |main_~#a~0.base|) (not (= main_~p2~0.base |main_~#a~0.base|))) [2020-07-21 16:19:20,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:19:20 BoogieIcfgContainer [2020-07-21 16:19:20,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:19:20,356 INFO L168 Benchmark]: Toolchain (without parser) took 1724.29 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 105.5 MB in the beginning and 124.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,357 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.34 ms. Allocated memory is still 143.7 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,359 INFO L168 Benchmark]: Boogie Preprocessor took 140.35 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 95.4 MB in the beginning and 181.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,360 INFO L168 Benchmark]: RCFGBuilder took 286.35 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 167.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,361 INFO L168 Benchmark]: TraceAbstraction took 921.52 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 124.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:19:20,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.34 ms. Allocated memory is still 143.7 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.35 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 95.4 MB in the beginning and 181.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.35 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 167.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 921.52 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 124.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 44 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 14 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 516 SizeOfPredicates, 10 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 21 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...