/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:53:13,755 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 21:53:13,899 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 21:53:13,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:53:13,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:53:13,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:53:13,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:53:13,960 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:53:13,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:53:13,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:53:13,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:53:13,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:53:13,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:53:13,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:53:13,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:53:13,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:53:13,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:53:13,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:53:13,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:53:13,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:53:13,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:53:13,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:53:13,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:53:13,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:53:13,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:53:13,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:53:13,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:53:13,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:53:13,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:53:13,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:53:13,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:53:13,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:53:13,974 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 -> DAGSIZE 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 -> 4 [2020-07-20 21:53:14,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:53:14,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:53:14,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:53:14,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:53:14,543 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:53:14,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test18.c [2020-07-20 21:53:14,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9af70a8/6db91da84b244d76833069fca8b7ea42/FLAG11baada50 [2020-07-20 21:53:15,467 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:53:15,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test18.c [2020-07-20 21:53:15,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9af70a8/6db91da84b244d76833069fca8b7ea42/FLAG11baada50 [2020-07-20 21:53:15,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9af70a8/6db91da84b244d76833069fca8b7ea42 [2020-07-20 21:53:15,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:53:15,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:53:15,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:53:15,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:53:15,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:53:15,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:15,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642f4b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15, skipping insertion in model container [2020-07-20 21:53:15,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:15,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:53:15,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:53:15,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:53:15,840 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:53:15,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:53:15,884 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:53:15,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15 WrapperNode [2020-07-20 21:53:15,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:53:15,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:53:15,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:53:15,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:53:16,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (1/1) ... [2020-07-20 21:53:16,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:53:16,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:53:16,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:53:16,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:53:16,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (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 21:53:16,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:53:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:53:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-07-20 21:53:16,175 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-20 21:53:16,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:53:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:53:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-07-20 21:53:16,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:53:16,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:53:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:53:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:53:16,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:53:16,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:53:16,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:53:16,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:53:16 BoogieIcfgContainer [2020-07-20 21:53:16,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:53:16,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:53:16,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:53:16,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:53:16,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:53:15" (1/3) ... [2020-07-20 21:53:16,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5ab7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:53:16, skipping insertion in model container [2020-07-20 21:53:16,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:53:15" (2/3) ... [2020-07-20 21:53:16,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5ab7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:53:16, skipping insertion in model container [2020-07-20 21:53:16,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:53:16" (3/3) ... [2020-07-20 21:53:16,527 INFO L109 eAbstractionObserver]: Analyzing ICFG test18.c [2020-07-20 21:53:16,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:53:16,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:53:16,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:53:16,609 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:53:16,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:53:16,609 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:53:16,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:53:16,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:53:16,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:53:16,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:53:16,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:53:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-20 21:53:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 21:53:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:53:16,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:53:16,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:53:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:53:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash 731851180, now seen corresponding path program 1 times [2020-07-20 21:53:16,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:53:16,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542044315] [2020-07-20 21:53:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 21:53:16,978 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:53:16,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:53:16,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 21:53:16,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:53:17,210 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,213 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-07-20 21:53:17,215 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,292 INFO L624 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2020-07-20 21:53:17,338 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-07-20 21:53:17,341 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,418 INFO L624 ElimStorePlain]: treesize reduction 16, result has 73.8 percent of original size [2020-07-20 21:53:17,421 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,422 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:15 [2020-07-20 21:53:17,568 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-07-20 21:53:17,570 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-07-20 21:53:17,572 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,592 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,631 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-07-20 21:53:17,633 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-07-20 21:53:17,635 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,668 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,673 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 21:53:17,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:45, output treesize:33 [2020-07-20 21:53:17,754 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 31 treesize of output 19 [2020-07-20 21:53:17,756 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,766 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,774 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-07-20 21:53:17,777 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,787 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,794 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 19 treesize of output 11 [2020-07-20 21:53:17,797 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,804 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,805 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,805 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:38, output treesize:7 [2020-07-20 21:53:17,861 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 15 treesize of output 7 [2020-07-20 21:53:17,863 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,868 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:53:17,869 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:53:17,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 21:53:17,899 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 21:53:17,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:53:17,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542044315] [2020-07-20 21:53:17,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:53:17,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 21:53:17,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373078431] [2020-07-20 21:53:17,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 21:53:17,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:53:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 21:53:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:53:17,950 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 9 states. [2020-07-20 21:53:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:53:18,278 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-07-20 21:53:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 21:53:18,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-07-20 21:53:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:53:18,297 INFO L225 Difference]: With dead ends: 27 [2020-07-20 21:53:18,297 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:53:18,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:53:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:53:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:53:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:53:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:53:18,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 21:53:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:53:18,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:53:18,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 21:53:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:53:18,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:53:18,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:53:18,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:53:18,720 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:53:18,721 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:53:18,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:53:18,722 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.base| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.base|) (= (select (select |#memory_$Pointer$.offset| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.offset|)) [2020-07-20 21:53:18,722 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-20 21:53:18,722 INFO L268 CegarLoopResult]: For program point fEXIT(lines 8 11) no Hoare annotation was computed. [2020-07-20 21:53:18,722 INFO L264 CegarLoopResult]: At program point fENTRY(lines 8 11) the Hoare annotation is: (and (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 21:53:18,723 INFO L268 CegarLoopResult]: For program point fFINAL(lines 8 11) no Hoare annotation was computed. [2020-07-20 21:53:18,723 INFO L268 CegarLoopResult]: For program point gEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 21:53:18,723 INFO L268 CegarLoopResult]: For program point gFINAL(lines 4 6) no Hoare annotation was computed. [2020-07-20 21:53:18,723 INFO L264 CegarLoopResult]: At program point gENTRY(lines 4 6) the Hoare annotation is: (and (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 21:53:18,724 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:53:18,724 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:53:18,724 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:53:18,724 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:53:18,724 INFO L264 CegarLoopResult]: At program point L17(lines 13 24) the Hoare annotation is: false [2020-07-20 21:53:18,725 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-07-20 21:53:18,725 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2020-07-20 21:53:18,725 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 21:53:18,726 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-07-20 21:53:18,726 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: (and (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 21:53:18,726 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 24) no Hoare annotation was computed. [2020-07-20 21:53:18,727 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 24) no Hoare annotation was computed. [2020-07-20 21:53:18,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:53:18 BoogieIcfgContainer [2020-07-20 21:53:18,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:53:18,750 INFO L168 Benchmark]: Toolchain (without parser) took 3221.28 ms. Allocated memory was 143.1 MB in the beginning and 230.7 MB in the end (delta: 87.6 MB). Free memory was 99.1 MB in the beginning and 182.7 MB in the end (delta: -83.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-20 21:53:18,751 INFO L168 Benchmark]: CDTParser took 1.88 ms. Allocated memory is still 143.1 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 21:53:18,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.28 ms. Allocated memory is still 143.1 MB. Free memory was 98.7 MB in the beginning and 89.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:53:18,754 INFO L168 Benchmark]: Boogie Preprocessor took 193.87 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 89.1 MB in the beginning and 179.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:53:18,754 INFO L168 Benchmark]: RCFGBuilder took 432.93 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:53:18,756 INFO L168 Benchmark]: TraceAbstraction took 2231.82 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 163.7 MB in the beginning and 182.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:53:18,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.88 ms. Allocated memory is still 143.1 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 351.28 ms. Allocated memory is still 143.1 MB. Free memory was 98.7 MB in the beginning and 89.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 193.87 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 89.1 MB in the beginning and 179.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.93 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2231.82 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 163.7 MB in the beginning and 182.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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: 13]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 4 SDslu, 56 SDs, 0 SdLazy, 74 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 47 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 18 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 2227 SizeOfPredicates, 11 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 32 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...