/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/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:20:46,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:20:46,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:20:46,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:20:46,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:20:46,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:20:46,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:20:46,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:20:46,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:20:46,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:20:46,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:20:46,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:20:46,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:20:46,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:20:46,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:20:46,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:20:46,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:20:46,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:20:46,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:20:46,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:20:46,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:20:46,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:20:46,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:20:46,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:20:46,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:20:46,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:20:46,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:20:46,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:20:46,838 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 16:20:46,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:20:46,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:20:46,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:20:46,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:20:46,858 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:20:46,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:20:46,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:20:46,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:20:46,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:20:46,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:20:46,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:20:46,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:20:46,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:20:46,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:20:46,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:20:46,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:20:46,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:20:46,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:20:46,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:20:46,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:20:46,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:20:46,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:20:46,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:20:46,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:20:46,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:20:46,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:20:46,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:20:46,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:20:46,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:20:46,863 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 16:20:47,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:20:47,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:20:47,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:20:47,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:20:47,163 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:20:47,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-21 16:20:47,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c731fbcf/a7339944a4564377bc191ba2aa898ed5/FLAG80d1a13b8 [2020-07-21 16:20:47,687 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:20:47,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-21 16:20:47,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c731fbcf/a7339944a4564377bc191ba2aa898ed5/FLAG80d1a13b8 [2020-07-21 16:20:48,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c731fbcf/a7339944a4564377bc191ba2aa898ed5 [2020-07-21 16:20:48,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:20:48,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:20:48,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:20:48,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:20:48,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:20:48,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eea5cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48, skipping insertion in model container [2020-07-21 16:20:48,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:20:48,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:20:48,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:20:48,300 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:20:48,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:20:48,327 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:20:48,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48 WrapperNode [2020-07-21 16:20:48,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:20:48,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:20:48,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:20:48,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:20:48,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (1/1) ... [2020-07-21 16:20:48,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:20:48,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:20:48,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:20:48,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:20:48,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (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 16:20:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:20:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:20:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:20:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:20:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:20:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:20:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 16:20:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:20:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:20:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:20:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:20:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:20:48,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:20:48,758 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:20:48,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:20:48 BoogieIcfgContainer [2020-07-21 16:20:48,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:20:48,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:20:48,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:20:48,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:20:48,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:20:48" (1/3) ... [2020-07-21 16:20:48,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9185ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:20:48, skipping insertion in model container [2020-07-21 16:20:48,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:48" (2/3) ... [2020-07-21 16:20:48,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9185ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:20:48, skipping insertion in model container [2020-07-21 16:20:48,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:20:48" (3/3) ... [2020-07-21 16:20:48,775 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-07-21 16:20:48,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:20:48,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:20:48,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:20:48,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:20:48,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:20:48,838 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:20:48,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:20:48,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:20:48,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:20:48,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:20:48,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:20:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-21 16:20:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 16:20:48,865 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:20:48,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:20:48,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:20:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:20:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2020-07-21 16:20:48,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:20:48,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949657264] [2020-07-21 16:20:48,883 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 16:20:48,974 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:20:48,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:20:48,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 16:20:48,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:20:49,068 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2020-07-21 16:20:49,070 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:20:49,078 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:20:49,079 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:20:49,079 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-07-21 16:20:49,098 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 16:20:49,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:20:49,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949657264] [2020-07-21 16:20:49,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:20:49,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:20:49,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549503780] [2020-07-21 16:20:49,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:20:49,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:20:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:20:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:20:49,120 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-21 16:20:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:20:49,141 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-21 16:20:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:20:49,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 16:20:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:20:49,159 INFO L225 Difference]: With dead ends: 19 [2020-07-21 16:20:49,160 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:20:49,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:20:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:20:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:20:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:20:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:20:49,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-07-21 16:20:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:20:49,196 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:20:49,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:20:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:20:49,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:20:49,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:20:49,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:20:49,464 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:20:49,464 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:20:49,464 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:20:49,465 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:20:49,465 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:20:49,466 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:20:49,466 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:20:49,466 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-21 16:20:49,466 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: true [2020-07-21 16:20:49,467 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-21 16:20:49,467 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-07-21 16:20:49,467 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-21 16:20:49,467 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-07-21 16:20:49,467 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-07-21 16:20:49,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:20:49 BoogieIcfgContainer [2020-07-21 16:20:49,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:20:49,475 INFO L168 Benchmark]: Toolchain (without parser) took 1385.37 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 138.6 MB in the end (delta: -36.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,476 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.92 ms. Allocated memory is still 137.9 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,478 INFO L168 Benchmark]: Boogie Preprocessor took 114.53 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.4 MB in the beginning and 180.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,479 INFO L168 Benchmark]: RCFGBuilder took 321.53 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 167.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,480 INFO L168 Benchmark]: TraceAbstraction took 705.83 ms. Allocated memory is still 202.4 MB. Free memory was 167.8 MB in the beginning and 138.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:49,485 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 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.92 ms. Allocated memory is still 137.9 MB. Free memory was 101.9 MB in the beginning and 92.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.53 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 92.4 MB in the beginning and 180.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.53 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 167.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 705.83 ms. Allocated memory is still 202.4 MB. Free memory was 167.8 MB in the beginning and 138.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 5 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 10 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...