/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:29:13,414 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 11:29:13,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:29:13,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:29:13,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:29:13,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:29:13,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:29:13,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:29:13,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:29:13,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:29:13,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:29:13,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:29:13,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:29:13,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:29:13,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:29:13,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:29:13,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:29:13,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:29:13,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:29:13,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:29:13,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:29:13,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:29:13,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:29:13,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:29:13,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:29:13,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:29:13,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:29:13,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:29:13,523 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:29:13,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:29:13,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:29:13,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:29:13,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:29:13,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:29:13,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:29:13,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:29:13,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:29:13,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:29:13,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:29:13,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:29:13,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:29:13,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:29:13,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:29:13,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:29:13,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:29:13,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:29:13,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:29:13,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:29:13,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:29:13,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:29:13,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:13,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:29:13,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:29:13,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:29:13,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:29:13,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:29:13,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:29:13,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:29:13,814 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:29:13,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-07-20 11:29:13,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740ba76c6/b11be309f1ac4de397ba15ceff0cb418/FLAG5f9ac371c [2020-07-20 11:29:14,328 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:29:14,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-07-20 11:29:14,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740ba76c6/b11be309f1ac4de397ba15ceff0cb418/FLAG5f9ac371c [2020-07-20 11:29:14,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740ba76c6/b11be309f1ac4de397ba15ceff0cb418 [2020-07-20 11:29:14,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:29:14,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:29:14,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:14,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:29:14,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:29:14,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:14,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5574675e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14, skipping insertion in model container [2020-07-20 11:29:14,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:14,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:29:14,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:29:14,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:14,946 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:29:14,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:14,979 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:29:14,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14 WrapperNode [2020-07-20 11:29:14,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:14,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:29:14,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:29:14,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:29:15,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... [2020-07-20 11:29:15,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:29:15,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:29:15,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:29:15,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:29:15,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:29:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:29:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:29:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:29:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:29:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:29:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:29:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 11:29:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-07-20 11:29:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-07-20 11:29:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:29:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:29:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:29:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:29:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:29:15,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:29:15,416 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:29:15,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:15 BoogieIcfgContainer [2020-07-20 11:29:15,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:29:15,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:29:15,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:29:15,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:29:15,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:29:14" (1/3) ... [2020-07-20 11:29:15,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235244a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:15, skipping insertion in model container [2020-07-20 11:29:15,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:14" (2/3) ... [2020-07-20 11:29:15,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235244a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:15, skipping insertion in model container [2020-07-20 11:29:15,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:15" (3/3) ... [2020-07-20 11:29:15,432 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2020-07-20 11:29:15,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:29:15,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:29:15,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:29:15,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:29:15,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:29:15,504 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:29:15,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:29:15,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:29:15,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:29:15,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:29:15,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:29:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 11:29:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 11:29:15,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:15,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:29:15,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:15,542 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-07-20 11:29:15,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:15,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557586303] [2020-07-20 11:29:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:15,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-20 11:29:15,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:15,899 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:15,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 55 [2020-07-20 11:29:15,902 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:15,995 INFO L624 ElimStorePlain]: treesize reduction 8, result has 97.3 percent of original size [2020-07-20 11:29:16,003 INFO L440 ElimStorePlain]: Different costs {1=[|v_#memory_int_5|], 6=[|v_#memory_$Pointer$.offset_5|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 11=[|v_#memory_$Pointer$.base_5|]} [2020-07-20 11:29:16,010 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 11:29:16,013 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-20 11:29:16,014 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:16,040 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 11:29:16,114 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,116 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 197 [2020-07-20 11:29:16,131 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-07-20 11:29:16,132 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:29:16,138 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2020-07-20 11:29:16,203 INFO L624 ElimStorePlain]: treesize reduction 284, result has 24.9 percent of original size [2020-07-20 11:29:16,222 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:16,236 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,248 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 7 treesize of output 3 [2020-07-20 11:29:16,249 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:16,258 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,271 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,272 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2020-07-20 11:29:16,279 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:29:16,284 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:16,287 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:16,288 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:29:16,289 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:306, output treesize:3 [2020-07-20 11:29:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:16,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:16,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557586303] [2020-07-20 11:29:16,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:16,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:29:16,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143286446] [2020-07-20 11:29:16,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:29:16,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:29:16,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:29:16,361 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-20 11:29:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:16,436 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-20 11:29:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:29:16,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 11:29:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:16,447 INFO L225 Difference]: With dead ends: 25 [2020-07-20 11:29:16,448 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:29:16,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:29:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:29:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:29:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:29:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:29:16,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-20 11:29:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:16,510 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:29:16,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:29:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:29:16,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:29:16,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:16,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:29:16,785 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:16,786 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:29:16,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:16,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:16,786 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:29:16,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:29:16,787 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:16,787 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-20 11:29:16,787 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: true [2020-07-20 11:29:16,787 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-07-20 11:29:16,788 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-07-20 11:29:16,788 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= 4 |main_#t~mem4|) [2020-07-20 11:29:16,788 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-07-20 11:29:16,788 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-07-20 11:29:16,789 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-07-20 11:29:16,789 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 11:29:16,789 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:29:16,789 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-20 11:29:16,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:29:16 BoogieIcfgContainer [2020-07-20 11:29:16,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:29:16,798 INFO L168 Benchmark]: Toolchain (without parser) took 2098.70 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 94.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,799 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.90 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 91.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,801 INFO L168 Benchmark]: Boogie Preprocessor took 117.67 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 181.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,802 INFO L168 Benchmark]: RCFGBuilder took 324.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 165.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,803 INFO L168 Benchmark]: TraceAbstraction took 1371.65 ms. Allocated memory is still 203.9 MB. Free memory was 165.1 MB in the beginning and 94.7 MB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:16,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.90 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 91.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.67 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 181.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.1 MB in the beginning and 165.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1371.65 ms. Allocated memory is still 203.9 MB. Free memory was 165.1 MB in the beginning and 94.7 MB in the end (delta: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 18 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 36 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...